Cell structure and functions
MDCAT • Biology
500 MCQs — Click "Reveal" to see the correct answer
Build a test-
1UHS MDCAT 2008
The two strands in DNA are coiled _ to each other.
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2UHS MDCAT 2008
Name the one involved in DNA replication.
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3UHS MDCAT 2008
Which of the following belong to collenchyma cells?
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4UHS MDCAT 2008
The soluble part of the cytoplasm is termed as:
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5UHS MDCAT 2009
Detoxification of harmful drugs within the cell is done by:
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6UHS MDCAT 2009
Phragmoplast is formed from vesicle which originates from:
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7UHS MDCAT 2011
Interior of chloroplast is divided into heterogeneous structure, embedded in the matrix known as:
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8UHS MDCAT 2012
The ribosomal RNA is synthesized and stored in
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9UHS MDCAT 2012
The endoplasmic reticulum contains a system of flattened membrane-bounded sacs which are named as
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10UHS MDCAT 2014
During animal cell division, the spindle fibres are formed from:
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11UHS MDCAT 2016
The organelles involved in the detoxification of drugs and poisons in the liver cells are:
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12UHS MDCAT 2016
The inner membrane of mitochondria form extensive infoldings called:
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13UHS MDCAT 2017
Functionally mesosomes can be compared with:
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14UHS MDCAT 2017
Cilia and flagella are absent in:
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15UHS MDCAT 2022
Which one is common in both prokaryotic and eukaryotic cells?
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16UHS MDCAT 2022
The digestive vacuoles and autophagosomes are also known as?
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17UHS MDCAT 2022
Which of the following are single membranous organelles?
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18UHS MDCAT 2022
_ are the structures formed by invagination of the plasma membrane and have been associated with cell division and DNA replication in prokaryotic cells.
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19UHS MDCAT 2022
Cell wall may be absent in which of the following?
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20UHS MDCAT 2023
Cell wall of prokaryotic cell is composed of:
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21UHS MDCAT 2023
Which structure of prokaryotic cell will play the role of mitochondrion?
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22UHS MDCAT 2023
Proteins and lipids are modified into Glycoproteins & Glycolipids by which cell organelle?
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23UHS MDCAT 2023
Biologically, plays key roles in maintaining the integrity of lipid bilayer membranes.
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24UHS MDCAT 2023
Bacterial cell have ability to maintain its shape through
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25UHS MDCAT 2023
The _ describes how water and dissolved chemicals are carried through the cell wall and intercellular gaps of plants.
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26UHS MDCAT 2023
Cells of different types can be distinguished on the basis of surface.
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27UHS MDCAT 2024
One of the following is CORRECT regarding flagella:
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28PMDC MDCAT 2025
The organelles only found at seeding stage in oil seed plants are:
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29UHS MDCAT 2024
The nucleus takes dyes due to the presence of:
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30UHS MDCAT 2024
Nissl’s granules are groups of:
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31UHS MDCAT 2024
Which of the following is the function of Golgi Complex?
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32UHS MDCAT 2024
Chloroplast are membrane bound bodies containing:
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33PMDC MDCAT 2025
A student observed a boundary in both plant and animal cells that controls entry and exit of substances. Which of the following structures is likely being observed?
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34PMDC MDCAT 2025
Which of the following statements best compares cell division in prokaryotic and Eukaryotic cells?
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35PMDC MDCAT 2025
An active athlete has more stamina of running compared to an officer of same age with physically inactive lifestyle. Which of the following organelles has greatly increased in the muscle cells of athlete?
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36PMDC MDCAT 2025
All are the functions of lysosome EXCEPT:
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37PMDC MDCAT 2025
What is the function of a centromere?
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38PMDC MDCAT 2025
Nissls granule is a specialized structure in neuron formed by modification of:
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39Sindh MDCAT 2023
Just given function is associated with lysosomes:
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40Sindh MDCAT 2023
Protein layers are embedded in lipid bilayers; this was explained by
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41Sindh MDCAT 2023
Which of the following best describes the plasma membrane?
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42Sindh MDCAT 2023
Which one is the powerhouse of the cell?
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43Sindh MDCAT 2023
The chemical compound has the same percentage in the bacterial as well as the mammalian cell:
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44
_is responsible for making ribosomal RNAs (rRNA)
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45
Which one of the following is not a constituent of the cell membrane?
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46
Keeping in view the 'fluid mosaic model' for the structure of cell membrane, which one of the following statements is correct with respect to the movements of lipids and proteins from one lipid monolayer to the other (described as flipflop movement)?
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47
The two sub-units of ribosome remain united at a critical ion level of:
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48
Vacuole in a plant cell
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49
In germinating seeds, fatty acids are degraded exclusively in the:
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50
Plasmodesmata are:
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51
Cytoskeleton is made up of:
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52
The middle lamella is composed mainly of:
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53ETEA MDCAT 2006
Which one of the following has its own DNA?
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54ETEA MDCAT 2006
The main area of various types of activities in a cell is the:
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55ETEA MDCAT 2006
The plasma membrane consists mainly of:
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56ETEA MDCAT 2006
An important site for formation of glycoproteins and glycolipids is
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57
Peptide synthesis inside a cell takes place in the:
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58
Which one of the following structures is an organelle within an organelle?
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59
What is true about ribosomes?
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60
Select the correct statement from the following regarding the cell membrane.
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61
Select the alternative giving correct identification and function of the organelle 'A' in the diagram.
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62
Which one of the following organelles in the figure correctly matches with its function?
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63
The Golgi complex plays a major role
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64
The osmotic expansion of a cell kept in water is chiefly regulated by
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65
The structures that are formed by stacking of organised flattened membranous sacs in the chloroplasts are:
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66
DNA is not present in:
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67
Which of the following are not membrane-bound?
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68
Cellular organelles with membranes are
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69
Which of the following structures is not found in a prokaryotic cell?
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70
Which one of the following cell organelles is enclosed by a single membrane?
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71
Microtubules are the constituents of:
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72
A cell organelle containing hydrolytic enzymes is:
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73
The entire cell wall of bacteria is often regarded as a single huge molecule or molecular complex called?
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74
Select the wrong statement from the following.
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75
The structure present in a eukaryotic cell but absent in prokaryotic cells is;
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76
Inner membrane convulsions of the mitochodria are called:
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77
Which of the following is not a character of mitochondria?
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78
Sarcoplasmic reticulum cells are those cells that contain:
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79
Which of the following organelle is involved in the release of oxygen?
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80
Lysosomes are formed by:
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81
A disease caused by the absence of a lysosomal enzyme responsible for lipid catabolism:
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82
Which of the following cell organelle does not contain DNA?
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83
Which of the following cell organelles is responsible for extracting energy from carbohydrates to form ATP?
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84
Which process takes place during the movement of glucose from the body fluid to the blood?
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85
Which of the following organelles has a continuous connection with a nuclear membrane?
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86FMDC MDCAT 2015
Which cell does not carry out oxidative phosphorylation?
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87
Which of the following is responsible for giving finnesse and box-like shape to plant cells?
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88
Which cell organelle is incorrectly matched with its function?
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89
In a eukaryotic cell, where are the proteins for electron transport chain located?
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90
The protoplast of a plant cell does not include:
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91
Which of these cell organelles are involved in the synthesis of new plant cell walls?
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92FMDC MDCAT 2018
Cellulose is usually not found in:
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93FMDC MDCAT 2018
The layers of cellulose fiber in cell wall are arranged with each other at:
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94ETEA MDCAT 2019
The safranin stain is usable for:
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95
The ribosomes responsible for protein synthesis are present in the cell _.
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96ETEA MDCAT 2019
Lipid bilayer makes the membrane differently permeable barrier that allows the transport of:
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97UHS MDCAT 2017 (Reconduct)
Which one is correctly matched with the tail of a phospholipid?
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98UHS MDCAT 2017 (Reconduct)
Among the following, which organelle has an outer membrane in it?
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99UHS MDCAT 2017 (Reconduct)
The site for the synthesis of ribosomal RNA is:
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100UHS MDCAT 2017 (Reconduct)
Engulfing of solid particle is termed as:
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101UHS MDCAT 2017 (Reconduct)
Which function is associated with lysosomes?
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102UHS MDCAT 2017 (Reconduct)
Identity the common organelle in plant and animals.
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103UHS MDCAT 2017 (Reconduct)
Ribosomes in prokaryotes sediments at:
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104UHS MDCAT 2017 (Reconduct)
Which organelle has two subunits?
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105UHS MDCAT 2017 (Reconduct)
The group of ribosomes joined by mRNA is called as:
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106UHS MDCAT 2017 (Reconduct)
A complex network of channels extending from plasma membrane to nuclear membrane:
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107UHS MDCAT 2017 (Reconduct)
What is the percentage of lipids in the chemical composition of plasma membrane?
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108UHS MDCAT 2013
The outer membrane of the nuclear envelope is at places continuous with the:
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109
The soluble part of the cytoplasm or fluid that remains when all organelles are removed is known as:
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110UHS MDCAT 2013
Which of the following structures is absent in higher plants and found in animal cells:
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111UHS MDCAT 2013
Centrioles are made up of _ microtubules:
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112PMDC MDCAT 2025 UHS MDCAT 2013
The function of nucleolus is to make:
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113UHS MDCAT 2013
The _ model of plasma membrane suggests that proteins are embedded in lipid bilayer.
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114UHS MDCAT 2013
The process by which unwanted structures within the cell are engulfed and digested within the lysosome is known as:
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115UHS MDCAT 2013
The simplest independent unit of life is known as:
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116UHS MDCAT 2014
_is a process by which the cell takes in fluids along with dissolved small molecules. In this process, the cell membrane folds and creates small pockets and captures the cellular fluid and dissolved substances.
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117UHS MDCAT 2014
Organelle involved in the synthesis of ATP is
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118UHS MDCAT 2014
Peptidoglycan or murein is a special or distinctive feature of the cell wall in:
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119UHS MDCAT 2012
Lipid synthesis/organisation takes place in which of the following organelle?
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120UHS MDCAT 2012
Plastids are only found in the:
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121UHS MDCAT 2015
Blood group antigen contains:
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122
The formation of glycolipids and glycoproteins is associated with
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123
The plasma membrane is made up of:
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124
Which organelle was a prokaryote:
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125
Which layer of the cell wall is formed first?
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126
The function of the cytoskeleton in a cell is:
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127
A plant cell wall is mainly composed of which of the following?
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128
The largest organelle in a mature living plant cell is:
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129
What is not true about liposomes?
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130
The factory of ribosomal synthesis is:
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131
Which statement describes an incorrect difference between a plant cell and a bacterial cell?
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132
Which of the following combination is an example of self-replicating organelles?
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133
Which of the following impart a red colour to rose petaIs?
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134
Growth and development of plant cells is the role of:
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135
Which scientist came up with the term "cell"?
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136
Which of the following plays vital role in defense activity of macrophage?
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137PMC Practice Test 3 2021
Glycophorin is involved in which of the following diseases?
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138
What is not a part of protoplasm?
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139
The rigidity of leaves and younger parts of the plants is contributed by _.
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140
Which among the following defines GPI anchored proteins?
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141
What is the correct sequence of steps in cell fractionation?
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142
Which of the following cytoskeletal fibers contain tubulin protein?
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143
Secondary cell wall is absent in _.
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144
Protein constitutes what percentage of the total dry weight found in cells?
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145
The mobility of integral proteins can be measured by physical state of which of the following?
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146
Where are the phosphatidylserine residues in the plasma membrane are located?
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147
Enzymes in 'Calvin cycle' are found in which cell organelles?
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148
The cellular structure of a plant cell consists of which non-living component?
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149
Movement of materials across the cell membrane which does not require expenditure of metabolic energy is called:
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150
Distribution of intrinsic proteins in the plasma membrane is?
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151
Which of the following statement is incorrect about Glyoxysomes?
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152
What are autophagosomes?
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153
The isolation of different cellular components to determine their chemical composition can be achieved by:
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154
On which of the following component of chloroplast chlorophyll is arranged?
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155
The organelle serving as a primary packaging area for molecules that will be distributed throughout the cell is?
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156
The cementing material between adjacent plant cells.
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157
The presence of which of the following feature would best indicate a eukaryotic cell?
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158
Fatty acids move through the plasma membrane by which transport method?
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159
The compound microscope was first used by:
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160
The soluble part of the cytoplasm is known as:
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161
Transverse diffusion (flip-flop) is the movement due to which of the following molecules?
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162
The image represent by compound microscope is:
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163
What percentage of protein is found in the cell membrane?
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164
Who opposed the idea the cell is an empty space bounded by thick wall?
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165
Under microscopic examination, which cellular structure would differentiate a plant cell _ from an animal cell?
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166
This jelly like substance inside the plasma membrane in which all cell organelles are floating is?
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167
Which cell organelle is involved in apoptosis?
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168
Ribosomes are chemically composed of which of the following?
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169
What is the resolution power of a compound microscope?
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170
The most important function of the cytoplasm is to act as a(n):
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171
Secretion of insulin from beta cells of the pancreas is an example of which membrane function?
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172
Which of the following is not a clause of the Cell Theory?
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173
The outer and inner membranes of mitochondria are:
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174
60S and 40S subunits combine to form what size particle?
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175
Which statement about the nucleolus is not true?
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176
The dense fluid filled region in the chloroplast is _.
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177
Which of the following imparts a red color to Rose petals?
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178
Which of the following would not be observed in a bacterial cell?
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179
The cells that lack lysosomes would have difficulty in which of the following?
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180
The function of the smooth endoplasmic reticulum (SER) is _.
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181
A chloroplast has 3 main components. They are the envelope, stroma and?
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182
Microfilaments are composed of a protein called:
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183
Phragmoplast is a characteristic feature of:
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184
Glycolipids in the plasma membrane are located at:
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185
Omnis cellula e cellula is hypothesized by?
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186
Where does the detoxification of harmful drugs occur?
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187
Lysosomes are known as "suicidal bags" because of?
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188
Which is not an example of transmembrane transport between different subcellular compartments?
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189
What is the approximate ratio of rRNA and protein in a ribosome?
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190
The image represented by a compound microscope is:
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191
Factory of ribosomal synthesis is:
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192
In cell fractionation various components of cells including its organelles can be isolated in different layers depending upon?
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193
The first layer of cell wall which is formed is called?
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194
Which of the following plays vital role in defense activity of macrophages?
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195PMC Practice Test 4 2021
A chromosome in which a centromere stays at one end is called:
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196
Centromere region where spindle fibres attach is:
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197
The human naked eye can differentiate between two points that are how much apart?
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198
What is the part of the cell membrane which is in contact with the internal and external environments?
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199
The function of the centrosome is?
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200
How does the human sperm locomote?
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201
Enzymes involved in protein synthesis are most likely to associated with which cell organelle?
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202
Why phospholipids are major part of the lipid bilayer in plasma membranes?
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203
Phagocytosis is a form of _. During phagocytosis, the cell membrane folds inwards in the form of a vacuole to engulf solid particles.
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204
The magnifying power of the electron microscope as compared to the eye is:
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205
Which of the following is synthesized by free floating ribosomes of cytoplasm in humans?
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206
Which substances can cross plasma membrane more easily?
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207
The maintenance of cell shape is the role of which of the following?
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208
What type of plant cells carry out photosynthesis?
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209
Which of the following are assembled and disassembled during the cell cycle?
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210
Somatic cells of humans have how many pairs of chromosomes in total?
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211
A group of ribosomes attached to mRNA is known as?
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212
Resolution of human eye is:
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213
The haploid number of chromosomes in the human eggs and sperms are?
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214
Which of the statement about cell membrane is not true?
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215
Centrioles are composed of how many microtubules?
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216
Which of the following cytoskeletal fibres contain tubulin protein?
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217
Which one of the following is a non-protoplasmic cell inclusion?
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218
Which of the following is left behind when a plant cell is treated by cellulase and pectinase enzymes?
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219
What happens if golgi apparatus is removed from the cell?
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220
Pancreas produces secretory granules that help in digestion. These granules, after passing through Endoplasmic reticulum, are pinched off from _ surface of Golgi apparatus?
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221
Cellular organelles that interact with hydrogen peroxide are called?
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222
The dense fluid filled region in the chloroplast is called:
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223
The soluble sap of the nucleus in a plant cell is called?
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224
The fluidity of the plasma membrane increases with which of the following?
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225
The Microscope's ability to distinguish between separate objects that are close together is called:
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226
The oxygen and carbon dioxide crosses the plasma membrane by the process of?
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227
The dense fluid-filled region in the chloroplast is?
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228
Which of the following is non-cellular in most cases in animals?
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229
_ is responsible for making ribosomal RNA (rRNA).
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230
The most important function of the cytoplasm is to acts as a?
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231
Which of the following is a mesh of interconnected membranes involved in protein synthesis and transport?
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232
Which of the following is a function of endoplasmic reticulum?
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233
Which of the statements correctly describes why ions are unable to cross the plasma membrane without channel proteins?
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234
Which of the following is not a function of Smooth Endoplasmic Reticulum (SER)?
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235
Protoplasts do not contain:
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236
The number of the internal compartments of mitochondria is:
-
237
Which of the following has a vital role in autophagy?
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238
Which of the following organelles is responsible for lipid metabolism?
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239
Which of the following encloses the respiratory enzymes?
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240
If three ribosomes are attached to a single mRNA at different points, then how many similar proteins would be formed?
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241
Which of the following is incorrectly matched?
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242
Myofilaments are made up of:
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243
Glycoproteins and lipoproteins are formed by:
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244
Protein factory in prokaryotic cell is:
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245
Cell wall is secreted by:
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246
Metabolism of lipids occurs in:
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247
Which one is not a component of the endoplasmic reticulum?
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248
Which one is not a cytoplasm body?
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249
Which of these organelles lacks a self-replicating mechanism?
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250
During which process is the surface area of the cell membrane increased?
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251
Which organelle is involved in the metabolism of lipids?
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252
Which organelle is connected with the nuclear membrane as well as the cell membrane?
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253
Which one of the following is a storage plastid?
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254
Which of the following organelles is not matched correctly with its function?
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255
Which of the following is a double membrane-bound organelle containing pores?
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256
Two ribosomal units attach to each other when Mg⁺² ion concentration reaches:
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257
The non-living part of the plant cell is:
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258
In the cytoplasm, _ subunits of ribosomes are bounded around the polymers of mRNA.
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259
This protein is present in microtubules?
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260
Which one of the following facilitates the transport of water, nutrients and allow upright growth in plants?
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261
Abnormal death of cells most likely occur due to the dysfunction of?
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262
In the plasma membrane, the fatty acid is attached at:
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263
The head of the plasma membrane is:
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264
_ is an amphipathic.
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265
The plasma membrane is made up of two layers of:
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266
What serves as a base of attachment for the cytoskeleton in some organisms?
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267
In the plasma membrane, proteins help in:
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268
In the plasma membrane, lipid helps in:
-
269
The cell membrane contains a large amount of:
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270
The lipid bilayer is:
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271
The mitochondria help in:
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272
Which of the following structures is present in both prokaryotes and eukaryotes?
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273
Damage to one of the following immediately kills the cell whether its prokaryotic or eukaryotic?
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274
Who came up with the term "cell"?
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275
Which interactions are responsible for the formation of lipid bilayer in the watery environment of the body?
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276
The structure of plasma membrane is mainly held together by:
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277
_ is the heaviest particulate of the cell.
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278
The process of self-digestion of selective nonfunctional organelle by cells through the actions of enzymes originating from the cell is called?
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279
Animal cells are interconnected by which of the following?
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280
According to the fluid mosaic model, the plasma membrane is composed of which of the following?
-
281
Centrioles are composed of how many triplets of microtubules?
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282PMC Practice Test 5 2021
It is suspected that this cell is prokaryotic. The presence of which of these cell structures would confirm that the cell is prokaryotic?
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283PMC Practice Test 5 2021
A cell without a cell wall is termed as?
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284PMC Practice Test 5 2021
Which one of the following is not a double membranous structure?
-
285PMC Practice Test 5 2021
The membrane of vacuole is called:
-
286PMC Practice Test 5 2021
Amoeboid movements and movement of cyclosis is due to?
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287PMC Practice Test 4 2021
Cellulose is the major component of?
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288UHS MDCAT 2018
The cisternae breaks up into vesicles from _ , _ of Golgi complex.
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289UHS MDCAT 2018
Tonoplast bounds which organelle:
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290UHS MDCAT 2018
Site of protein synthesis in cells are:
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291PMC Practice Test 3 2021
What is the property of the part of a cell membrane that is in contact with the external and internal environment?
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292
The cell organelles involved, in some cases, in extra-cellular digestion are _.
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293PMC Practice Test 3 2021
Smooth endoplasmic reticulum is abundant in which types of cells?
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294PMC Practice Test 2 2021
Which type of cell would be the most appropriate for the study of chloroplasts?
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295PMC Practice Test 2 2021
What is the name of the region where double-stranded single circular DNA is found in the prokaryotic cell?
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296PMC Practice Test 2 2021
Which of the following is a unique characteristic of prokaryotic cells?
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297PMC Practice Test 2 2021
Which among the following defines GPI-anchored proteins?
-
298PMC Practice Test 2 2021
Ribonucleoprotein particles are the name of:
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299PMC Practice Test 1 2021 PMC Practice Test 1 2022
If a microscope has a 10× objective lens and 10× ocular lens, it would magnify the object by:
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300PMC Practice Test 1 2021 PMC Practice Test 1 2022
Which one of the following is present outside the plasma membrane but inside the cell wall?
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301PMC Practice Test 1 2021 PMC Practice Test 1 2022
Centrosome is found in:
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302
The term 'cell' was given by:
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303UHS MDCAT 2019
Smooth endoplasmic reticulum is responsible for the metabolism of:
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304UHS MDCAT 2019
If 15 um size object is observed under light microscope, using 5X eyepiece and 10X objective, its magnified image size will be:
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305UHS MDCAT 2019
The prokaryotes possess ribosome with larger subunit of:
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306UHS MDCAT 2019
Site of mRNA translation:
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307UHS MDCAT 2019
Which cell organelle is responsible for protein modification?
-
308
Which of the following is not present in mitochondria?
-
309
Which combination of organelles is usually present in both animal and plant cells?
-
310
Golgi complex was discovered by which scientist?
-
311
The type of plastids found in roots of plants _ .
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312
Centrifugation is a _
-
313
What part of the cell serves as an intracellular highway?
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314
The cell theory is applicable to all organisms except:
-
315
What was the unit membrane model?
-
316
Which of the following cells do not possess a nucleus?
-
317
Which is present nearest to plasma membrane in plant cell?
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318
In eggs, Ca+2 plays an important role especially at the time of fertilization. Therefore _ are present in many thousand numbers inside the cell membrane.
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319
Label the following phenomenon
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320
Cell permeability and transport processes of cell membrane depend upon its _ component.
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321Sindh MCAT NTS 2019
When a plant cell receives a signal for death, it commits suicide by rupturing:
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322
While working in a laboratory, before studying a sample under the microscope, it was immersed in a dye solution to obtain _.
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323Sindh MCAT NTS 2019
A group of biologically active molecules formed from amino acids which interact with the surfiace of the lipid bilayer of cell membranes are called:
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324Sindh MCAT NTS 2019
What type of protein is present in eukaryotic DNA but NOT in prokaryotic DNA?
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325Sindh MCAT NTS 2019
In higher animals' bodies, tissue fluid is isotonic contrary to plants because in plant cells:
-
326
Role of lysosomes include:
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327FMDC MDCAT 2018
The outermost boundary in most of the leaf cell is:
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328FMDC MDCAT 2018
Which of the following terms is used to describe the membrane of central vacuole?
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329FMDC MDCAT 2018
Which of the following correctly shows structures which are found in a eukaryotic cell? (Yes = present ; No = absent)
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330FMDC MDCAT 2018
The process by which various components of cells including its organelle can be isolated is called:
-
331
Inner concave surface of Golgi complex is called _ face.
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332NUMS MDCAT 2019
Which of the following are the most prominent part of cell membranes in living organisms?
-
333
Sarcoplasmic reticulum is like endoplasmic reticulum but devoid of _ and exhibit a highly specialized _ pattern.
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334NUMS MDCAT 2019
The power of a microscope by which we can distinguish two closely located points is termed as:
-
335NUMS MDCAT 2019
Which of these alphabets indicate the presence of the power house of the cell?
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336NUMS MDCAT 2019
Which of the following are related to the synthesis of excretory protein by the cell?
-
337
Protein layers which are NOT continuous on the surface make _ percent of total in plasma membrane.
-
338
The inner membrane of mitochondrion has many infoldings into the inner chamber, these folding are called as:
-
339
Which among the following sentence is not correct about the organelles?
-
340
Which of the following offers an active barrier between the cell content and its environment by allowing only selective substances to pass through it?
-
341
Name the organelle ''10'' in the figure given below.
-
342
Which one of the following combinations is NOT part of an animal cell?
-
343
In a typical compound microscope the resolution is 2 μm. Which is about _ that of naked eye.
-
344
The basic structural framework of all types of membranes is:
-
345NUMS MDCAT 2020
Which of the following cells does not have a nucleus?
-
346NUMS MDCAT 2020
Select the pair of organs, that contains a large number of mitochondria:
-
347
_ organelles are involved in the synthesis of the plant cell wall.
-
348
Fibers of the extracellular matrix are attached to_ plasma membrane:
-
349NUMS MDCAT 2020
Which type of movement through the cell membrane is not an energy-consuming process?
-
350NUMS MDCAT 2020
Which type of leucoplasts store lipids?
-
351NUMS MDCAT 2020
Chief material present in the cell wall of plants, fungal, and prokaryotic cells is:
-
352
Elaioplasts found in plants are actually one of the types of:
-
353
Founder of cell biology is:
-
354Sindh MCAT NTS 2016 SMBBMC Lyari
The diagram is taken from an electron micrograph of a cell, name the organelle labelled B:
-
355Sindh MCAT NTS 2016 SMBBMC Lyari
The process of membrane fusion and the movement of material out of the cell, is called:
-
356
Tay Sach's disease is caused by absence of enzyme required to breakdown _.
-
357ETEA MDCAT 2011
Anthocyanins are various types of colorful pigments present in the:
-
358
Its membranes are the sites where sunlight energy is trapped and where glucose is formed. Which organelle is this?
-
359Sindh MCAT NTS 2017
Which features do animal cells share with plant cells?
-
360Sindh MCAT NTS 2017
Which of the following statement(s) is/are correct regarding a nucleus? I.Stores wastes and other SubstancesII.Contains genetic materialIII.Helps in cellular transport systemIV.Control centre of the cell
-
361Sindh MCAT NTS 2017
Which of the following is correctly matched?
-
362Sindh MCAT NTS 2015 DUHS and JSMU
Which of the following is correct for the given structure?
-
363Sindh MCAT NTS 2015 DUHS and JSMU
The diagram shows some similarities between golgi apparatus, mitochondria and suicide sacs. Which one is correct?
-
364Sindh MCAT NTS 2015 SMBBMC Lyari
It is the non-living component of the cell, it is secreted and maintained by the living portion of the cell and is found only in plants. What is this structure?
-
365PMDC MDCAT 2020
Which of the following cell organelles involved in the synthesis of cell wall and middle lamella?
-
366PMDC MDCAT 2020
Suggest which among the following is not a function attributed to endoplasmic reticulum?
-
367PMDC MDCAT 2020
Tissue is a:
-
368PMDC MDCAT 2020
70S sized ribosomes are found in the cytoplasm of:
-
369PMDC MDCAT 2020
In which type of cells, cell wall is not present?
-
370Sindh MCAT NTS 2016 DUHS and JSMU
The diagram shows an apparatus set up to investigate the effect of changing the concentration of glucose in the surrounding solution on the movement of molecules through a selectively permeable membrane (Visking tubing) in 15 minutes. As the concentration of glucose solution in the surrounding solution increases, which of the following statements are correct? Net diffusion of water increases. Glucose molecules reach an equilibrium quicker. There is less change in the volume of the surrounding solution. Net diffusion of glucose increases.
-
371Sindh MCAT NTS 2018
Which one of the following organelles is required for aerobic respiration?
-
372Sindh MCAT NTS 2018
Which of the following is NOT the function of cell membranes?
-
373Sindh MCAT NTS 2013 DUHS and JSMU
Which is the incorrectly paired one?
-
374Sindh MCAT NTS 2012 DUHS and JSMU
Lysosomes are also called:
-
375
Detoxification of drugs is the function of _ in a cell.
-
376
The cells are held together by a Ca-pectate layer are called as:
-
377
DNA is found in which of the following structures?
-
378
A group of cells performing the same function is known as:
-
379
Which of the following is NOT a basic unit of the cell?
-
380
The cell membrane surrounds the:
-
381Sindh MCAT NTS 2010 DUHS and JSMU
In which model do proteins float in membrane like icebergs in sea:
-
382
Shape of the maturing phase of the golgi apparatus is?
-
383
The prokaryotes possess small ribosomes of size:
-
384UHS MDCAT 2019
The structure present in a eukaryotic cell but absent in prokaryotic cells is:
-
385
Which cell organelle is responsible for cell secretion?
-
386
Site of protein synthesis is:
-
387
If 15 mm size object is observed under light microscope using 5X eyepieces and 10X objective, its magnified image size will be:
-
388UHS MDCAT 2018
These structures are involved in the breakdown of old organelles:
-
389
Tonoplast bounds which organelle?
-
390UHS MDCAT 2018
Ribosomes are made up of _ and _.
-
391
Site of protein synthesis in cell is:
-
392
The ability to distinguish between two separate points/ objects is:
-
393
Self eating of lysosomes is called:
-
394
Taking in of solid particle by cell is called:
-
395
Ribosome present in prokaryotes are of:
-
396
Which of the following organelle consist of two subunits?
-
397
Group of ribosomes attached to mRNA is called:
-
398
Which organelle is involved in aerobic respiration?
-
399UHS MDCAT 2017
DNA molecule in prokaryotes is:
-
400
Which of the following structure is present in both plant and animal cells but is absent in prokaryotic cells?
-
401UHS MDCAT 2017
Ribosomes present in prokaryotes are:
-
402UHS MDCAT 2017
Select the organelle which is only present in animal cells:
-
403
Which one of the following organelle is found in both prokaryotic and eukaryotic cells?
-
404
The organelle involved in detoxification of drugs and poisons in the liver cells:
-
405
Presence of large central vacuole is the characteristic of:
-
406
Out of the given options, choose the one which shows the structures found only in plants.
-
407
The basic structure of plasma membrane is provided by:
-
408
The rapid exchange of materials through carrier proteins across the plasma membrane is called:
-
409
The inner membrane of mitochondria form extensive infoldings called _.
-
410UHS MDCAT 2015
Which organelle is bounded by two membranes?
-
411UHS MDCAT 2015
Which one of the following cell structures is involved in the synthesis of lipids?
-
412
Ribosomes are tiny organelles, which are involved in the synthesis of:
-
413UHS MDCAT 2015
Fluid mosaic model of plasma membrane states that protein molecules float in a fluid-like _ layer.
-
414
Peptidoglycan or murein is a special or distinctive feature of cell wall in:
-
415
Organelle involved in the synthesis of ATP is:
-
416UHS MDCAT 2014
In mitochondria, small knob-like structures called F1 particles are found in:
-
417UHS MDCAT 2014
Which component of the cell is concerned with cell secretions?
-
418UHS MDCAT 2014
The intake of liquid materials across the cell membrane is:
-
419
The outer membrane of the nuclear envelope is at places continuous with the _.
-
420
Which of the following structures is absent in higher plants and found in animal cells?
-
421
Centriole is made up of _ triplets of microtubules.
-
422
The process by which unwanted substances within the cell are engulfed and digested within the lysosome is known as:
-
423UHS MDCAT 2013
The enzymes of lysosomes are synthesized on:
-
424UHS MDCAT 2013
Lipid metabolism is the function of:
-
425
The model of plasma membrane suggests that proteins are embedded in lipid bilayer.
-
426
The ribosomal RNA is synthesized and stored in:
-
427UHS MDCAT 2012
Ribosomes exist in two forms, either attached with RER or freely dispersed in the:
-
428
Lipid synthesis/ metabolism takes place in which of the following organelle?
-
429
The endoplasmic reticulum contains a system of flattened membrane-bounded sacs, which are named as
-
430
Plastids are only found in the :
-
431
Which of the following contains a peptidoglycan cell wall?
-
432
Interior of chloroplast is divided into the heterogeneous structure, embedded in the stroma known as:
-
433UHS MDCAT 2011
The inner membrane of mitochondria is folded to form finger like structure called:
-
434UHS MDCAT 2011
Which of the following organelles is concerned with the cell secretion?
-
435
The entire cell wall of bacteria is often regarded as a single huge molecule or molecular complex called_:
-
436UHS MDCAT 2011
In prokaryotic cell wall, strengthening material is:
-
437
Microtubules of spindle fibers are composed of a protein called:
-
438UHS MDCAT 2009
A group of ribosomes attached to messenger RNA is known as:
-
439UHS MDCAT 2008
Which of the following are colorless?
-
440UHS MDCAT 2008
Which one of the following is most slender in structure?
-
441UHS MDCAT 2008
Which of the following modifies proteins and lipids by adding carbohydrates?
-
442
The distinguishing feature of prokaryotic cell is its:
-
443
Prokaryotic and eukaryotic cells generally have which of the following features in common?
-
444
What is the main difference between prokaryotes and eukaryotes?
-
445
Which of the following statements is true?
-
446
rRNA is actively synthesized in:
-
447
It precisely describes the function of nucleoli:
-
448
Which of the following organelle have a continuous connection with nuclear membrane?
-
449
Nucleolus is visible in:
-
450
Which of the following statements is incorrect?
-
451
Chlorophyll molecule resembles with:
-
452
Which of the following eukaryotic organelle has symbiotic origin with bacteria?
-
453
Which of the following cell type is most appropriate to study mitochondria?
-
454
Krebs cycle occurs in_ of mitochondria.
-
455
Which of the following structure is involved in oxidative phosphorylation?
-
456
Which of the following cell organelle can be viewed with the help of high power light microscope?
-
457
Number of centrioles after completion of the G2 phase and during the metaphase of mitosis is _ and _ respectively.
-
458
All of the following proteins are present in microfilaments of skeletal muscle cell except:
-
459
What is the specific name given to the biological membrane that surrounds the vacuoles?
-
460
_ provides support for the individual plant cell and contributes to the turgidity of the leaves and younger parts of plants.
-
461
It is a disease characterized by the accumulation of lipids in the brain cells leading to:
-
462
Which of the following organelle is most abundant in those animal cells which exhibit phagocytic activity?
-
463
The transport of secretory proteins takes place through organelles in which of the following order?
-
464
Golgi complex is involved in the formation of _ .
-
465
Modification of proteins and lipids into glycoproteins and glycolipids is the function of:
-
466
Identify the correct pair from the following options:
-
467
Identify non-membranous organelle from the following:
-
468
Ribosomes are associated with all of the following organelles except:
-
469
All of the following organelles contain DNA except:
-
470
Which of the following function is performed by both types of endoplasmic reticulum?
-
471
Which of the following organelle is associated with the single membrane?
-
472
Which function is not related to the smooth endoplasmic reticulum?
-
473
Which of the following statement is incorrect regarding endoplasmic reticulum ?
-
474
Which of the following best describes the function of RER in eukaryotic cells?
-
475
Which structure is the most important for cellular life?
-
476
Which of the following acts as receptor site on plasma membrane?
-
477
Which of the following is NOT a characteristic feature of animal cell membrane?
-
478
In plasma membrane, carbohydrates combine with the lipids and proteins to form glycolipids and glycoproteins and are oriented:
-
479
Which of the following describes the fluid mosaic model of plasma membrane structure?
-
480
Hydrophobic portion of plasma membrane is present in/at:
-
481
All of the following are common molecules in membranes of all type of cells except:
-
482
Which of the following is not present in plant cells?
-
483
It is an example of semi autonomous organelle found in both animal and plant cells:
-
484
Which of the following statements are true for mitochondria and chloroplasts?A. ATP synthesis is seen in bothB. The outer membrane has more surface area in bothC. Circular naked DNA, RNA, and 70 ribosomes are seen in bothD. Oxidative phosphorylation occurs in both
-
485
Which of the following part of the cell is described as a fluid mosaic?
-
486PMC Practice Test 2 2021
Proteins and lipids are converted into glycolipids and glycoproteins by adding carbohydrates by?
-
487
Golgi complex is not responsible for the formation of secretory granules in_cell.
-
488UHS MDCAT 2019
The finger like infoldings, which are formed by inner membrane of mitochondria, are called:
-
489UHS MDCAT 2019
Among the following, which cellular organelle contains circular DNA, similar to those found in bacteria?
-
490
In the human cell, _ is responsible for oxidizing hydrogen peroxide.
-
491UHS MDCAT 2018
They serve as a scaffold for formation of higher order chromatin structure:
-
492
Which of the following is NOT a difference that would allow one to distinguish between a prokaryotic and a eukaryotic cell? Presence or absence of the nucleus Presence or absence of the cell wall Membrane-bound versus non-membrane-bound organelles
-
493
The smaller (40S) of ribosome combines with larger subunit (60S) in the presence of Mg2+ ion to form _ particle.
-
494Sindh MCAT NTS 2011 DUHS and JSMU
Lysosomes function in:
-
495
The idea that opposed the idea of abiogenesis was proposed by?
-
496
What is the role of cholesterol in the cell membrane?
-
497
In cross-section, each Centriole consists of nine (each in triplets) of:
-
498
_ is involved in lipid synthesis/metabolism.
-
499PMC Practice Test 5 2021
In the plants, there are 50 or more thylakoids piled upon each other to form?
-
500
The spent energy in the form of ADP is regenerated by mitochondria into which of the following?