PMDC MDCAT 2020

Which one of the following is common to all neurons?

Which one of the following is an example of unsaturated fatty acid?

During photosynthesis, in the electron transport chain, ATP synthesis takes place when electrons move from:

Phenotype is:

Transgenic organisms:

The end product in anaerobic respiration is:

Numerous opportunist diseases might attack people suffering from the following diseases?

Which property of water helps to maintain the integrity of lipid membranes?

Mono-saccharides have a general formula represented by:

Photophosphorylation takes place in the _____ of the chloroplasts:

In roots, the apoplast pathway of water is disrupted when water reaches:

When the temperature of the surrounding environment rises, body responds by:

In humans, the temperature regulation control center is located in:

This theory says that “mitochondria and chloroplasts are, in effect, ancient bacteria which now live inside the larger cells”:

Water acts as universal solvent because of:

Which one of the following is found in both messenger RNA and DNA of a mammalian cell?

Which of the following is not necessary for PCR to occur?

Which of the following is not true about human immunodeficiency virus?

In which type of cells, cell wall is not present?

70S sized ribosomes are found in the cytoplasm of:

Lipids store double amount of energy as compared to carbohydrates because of:

Most enzymes have an optimum temperature of around:

During meiosis, the homologous chromosomes come together and form pairs, this process is called:

Which of the following are the components/tools of recombinant DNA technology?

Which of the following is TRUE about Amoebae?

Which body function is controlled through a positive feedback mechanism?

Lock and Key Model for enzyme action propose by Emil Fischer suggests that:

What is the function of Ribulose?

The particular array of chromosomes that an individual possesses is called its

Gel electrophoresis is a technique:

The excretion of hypertonic urine in humans is associated best with the:

What do we call the cell surface membrane of a muscle fibre?

Hemophilia occurs because of:

Which traits are more likely to affect men than women?

Which of the following is a copper containing protein in electron transport chain?

What is the effect of enzyme DNA ligase?

Select a method which causes the oxidation of chemical constituent of a bacterial cell:

A structural component that is found in all viruses is?

Which of the following hormones of the pituitary gland regulates the menstrual cycle?

______ alleles both have an effect on the phenotype of a heterozygous organism:

Which of the following cell organelles involved in the synthesis of cell wall and middle lamella?

The organs which are similar in function but differ in structure are called:

It is a method for rapid production of a very large number of copies of a particular fragment of DNA:

Tissue is a:

In 'Complete Dominance':

The complete, mature and infection virus particle is known as:

In human heart the left atrium receives:

Which one of the following muscles are considered as “Voluntary muscles”?

NAD is an example of:

Transcription is the process in which an RNA copy of the DNA sequence and coding the gene is produced with the help of an enzyme called:

The DNA that has been altered and which now contains the length of nucleotides from two different organisms is called a:

Regarding structure of the human heart, Chordae tendinae are present in:

Which of the following blood vessels have the highest pressure of blood?

Which one of the following represents the changes that occur in the ovary and the uterus approximately every 28 days involving ovulation with the breakdown and loss of the lining of the uterus?

When both the alleles of a gene pair are same, the organism is said to be:

Red algae do not contribute towards:

The directional movement towards or away from the stimulus is called:

Enzymes work by lowering the ______ of the reactions they catalyse:

Select an anamniote from the following:-

The only vein in human carrying oxygenated blood is:

Antibodies are manufactured in:

The active uptake of sodium in the ascending limb or thick loop of Henle is promoted by the action of:

Which of the following neurotransmitters function, both as neurotransmitter and hormones, decreasing our perception of pain?

“Law of independent assortment” states:

The cells in our body are all genetically identical, apart from the:

Which one of the following are “myogenic” type of muscles?

Neurons are cells adapted for the rapid transmission of electrical impulses. To do this, they have long thin processes called:

A _____ is a junction between two neurons or between a motor neuron and a muscle cell:

Which of the following diseases is sexually transmitted?

Which statement correctly describes the transcription of DNA?

Which of the following is true about the structure of a typical bacterium?

The cells which play a very important role in developing immunity are:

Autoimmune diseases act as the principle of:

As an excretory organ, liver:

According to the fluid mosaic model of cell membrane, which zone is embedded inside?

Suggest which among the following is not a function attributed to endoplasmic reticulum?

First stable compound during Calvin cycle is:

At what phase the DNA content of a cell is doubled?

______ occurs because natural selection gives some alleles a better chance of survival than others:

Which of the following is not related to enveloped virus?

L - Asparaginase enzyme has been used for the treatment of:

Electronic configuration of chromium (proton number 24) is:

Born Haber cycle is used to determine:

CO2 and SO2 both are tri-atomic molecules but the heat of vaporization of SO2 is greater than that of CO2 due to the:

Generic formula of cycloalkane is:

When CH3 is attached to the benzene ring, it makes the ring a:

The unit of the rate constant is the same as that of the rate of reaction in:

For the reaction, A(g) -> products:When the concentration of A(g) doubles, the rate of reaction increases four folds, which means it is:

The oxidation state of “S’ in the (S2O3)-2 is:

Which of the following hybrid orbitals has maximum “s” character?

Potassium, Rubidium, Cesium react with oxygen to form which types of oxides?

The first Ionization energy is maximum for:

In a vessel 10g N2, 10g H2 and 10g O2 are present. Which one will have least number of atoms?

The empirical formula of Glucose C6H12O6 is:

Quantum number values for 2p are

Which of the following is the strongest acid?

In 3rd series of transition elements, paramagnetic behaviour is maximum for Mn+2 and:

Which of the following compounds show geometric isomerism?

Which of the following reaction has greater Kp than Kc?

Secondary alcohol is the product of reduction of which carbonyl compound?

Which of the following substances has a giant covalent structure?

The thermal energy at constant pressure is called:

One Calorie is equal to:

Which of the following has the lowest vapour pressure at 20 degrees Centigrade?

Phenol is more acidic than alcohols because of the following reason:

Following has IUPAC name of:

Acetophenone can be formed by which of the following reaction for benzene?

For which of the following order of the reaction, rate of reaction is inversely proportional to the concentration reaction?

The relationship between quantum number n and l is:

Based on function, thyroxine can be classified as:

Alkyl halides involving -C-X bond breakage and -C-Nu bond formation simultaneously would follow the mechanism:

The common oxidation number of halogens is:

During oxidation process, oxidation number of an element:

Which pair has 1 electron in its ‘s’ orbital?

IUPAC name of C6H5 - CH2 - CH2 - NH2 is:

The exact reactivity order for carboxylic acid derivatives is:

Magnesium reacts with nitrogen to form:

Secondary alkyl halide is:

Which of the following reagent is used to separate and purify carbonyl and non carbonyl compounds?

Densities of alkali metals are low due to:

The common name of the following aldehyde is:

Select the organic compound which belongs to Arene family:

The equation N2(g) + 3H2(g) ⇋ 2NH3(g) represents:

The study of rates of chemical reactions and the factors that affect the rates of chemical reactions is known as:

Which of the following has the highest value of electronegativity?

The efficiency of chemical reaction can be expressed as:

Which of the following has lowest e/m ratio?

Phenol is known as:

The transition element which doesn't show variable valency?

The type of isomerism existing in a compound of molecular formula C2H6O is:

Electrophile in sulphonation of benzene is:

R-X on reaction with alcohols form:

Hydrolysis of acyl chloride results in the formation of:

Astronomers calculate speed of distant stars and galaxies using which of the following phenomena:

The main difference between X-rays and Ɣ-rays is:

At what angle of projection of a projectile the range becomes half of its maximum value?

If the potential at a point which is 1m from a charge is 1 volt, then the potential at a point which is 2m from the same charge will be:

Ohm multiplied by farad is equivalent to:

Two parallel straight conductors, in which current is flowing in the same direction, attract each other. The cause of it is:

If during circular motion, the tangential velocity of a body becomes double, then centripetal force becomes:

Under what condition an object will have zero displacement but non zero distance?

Which one of the following properties is not exhibited by the longitudinal waves?

In which process the entire heat supplied to the gas is converted to the internal energy of the gas?

Which one of the following is a non-conservative force?

The speed of sound in air is 332 m/s. The speed of sound at 22 degrees centigrade will be:

The newton-second is the unit of:

Which photon carries the most energy?

One of the following is an Ohmic device:

In what form is the energy stored in a charged capacitor?

One kilowatt-hour is commonly termed as one commercial unit of electric energy which is equal to:

The internal energy of a system during an isothermal process:

The slope of distance - time graph will always be:

What is the speed of 2.0 kg metallic bob at the mean position of a simple pendulum, when released from its extreme position 0.5m high? (g = 10 ms-2)

In transmission from grid station, power losses are minimized by:

The domestic electricity supply has a frequency of:

In a full-wave bridge rectification, the number of diodes used are:

There are initially 400 atoms in a radioactive sample. What would be the number of atoms after 3 half - life?

If a stationary bar magnet is placed near a coil so that maximum lines of force passes through the coil, the galvanometer shows:

Transformer is a device which steps up or steps down the input:

In a ripple tank, 40 waves pass through a certain point in 1 second. If the wavelength of the wave is 5 cm, then speed of the wave is:

Which of the following series lies in the ultraviolet range?

The change in resistance of metallic conductor at temperature below 0 degrees is:

Magnetic flux is maximum when angle between magnetic field and vector area is:

PIV stands for :

The wavelength associated with an electron is of the order:

The values of electric intensity will ____ due to the presence of dielectric medium:

1 radian is equal to:

While using radiation therapy, cancerous thyroid is treated with ____ radioisotope:

If we drop an object, it’s initial velocity is zero. How far will it fall in time ‘t’?

When the speed of your car is halved, by what factor does its kinetic energy decreases?

A 1.75 m tall weight-lifter raises a weight of mass 50 kg to a height of 0.5 m above its head. How much work is being done by it? (g = 10 ms-2)

The earth rotates on its axis once a day. Suppose, by some process the earth contracts so that it’s radius is only half as large as at present, then how long the earth will take to complete it’s rotation?

Ahmed ____ me for a long time.

Choose the correct option:

Choose the correct spelling:

Choose the correct option: Knowledge and wisdom ____ no time for connection.

Choose the correct sentence:

Pick the correct option:

Find the error in the following options:

We prefer fruits ____ sweets.

Identify the errors and choose the correct option:

‘She always carried an umbrella’. The sentence indicates ____ tense.

Fill in the blank with appropriate article as required. _____ umbrella is of no avail against a thunderstorm.

Select the nearest correct meaning of the word: 'Unburdened'.

Choose the correctly structured sentence:

Choose the correct spelling:

Either my father or my brothers __________ going to sell the car.

Identify the errors and choose the correct option: I hope this letters finds in the best of your spirits.

The headmaster ____ to speak to you.

Pick the correct option:

Choose the correctly punctuated sentence:

Not only the parents but also their son ______ for interview.