Sindh MDCAT 2023

The structure of an enzyme is altered by:

In nutritional terms, what among the following is sundew categorized as?

When Mendel crossed together two contrasting homozygous individuals, the phenotype of the hybrid in the F1 cross appeared to be that of:

How much of temperature (°C) rise will be observed, as per the definition of specific capacity, if energy is used to raise the temperature of 1 gram of a substance?

Which of the following may lead to death by the age of three years?

Just given function is associated with lysosomes:

If a dihybrid cross is made between Pisum sativum plants having Yellow/Round and Green/Wrinkled seeds. Which of the following results are not shown in the F2 generation?

The one molecule of fatty acid forming ester bond with one molecule of long chain alcohol is:

Which of the following describes coral reefs used by Hakeem in preparing eastern medicines?

Corpus luteum in mammals occurs in:

If a dihybrid cross is made between Pisum sativum plants producing Yellow/Round and Green/Wrinkled seeds. Results of F2 generation show:Yellow/Round- 9/16Yellow/Wrinkled-3/16Green/Round-3/16Green/Wrinkled 1/16Which ratios of these results confirm independent assortment had taken place?

A virus enters into the body of host & intends to produce DNA from RNA.Which enzyme is required for this process?

The acceptor of carbon dioxide in Calvin cycle Is:

The chemical compound has the same percentage in the bacterial as well as the mammalian cell:

A phospholipid molecule has a head and two tails. Where are the tails found?

How are the ribs attached to vertebrae?

Polygenic inheritance forms the basis of:

In carbohydrate hydrogen & oxygen are mostly in the same ratio i.e. 2:1 that's why they are called:

Carolus Linnaeus was believer of which of the following?

This part of the brain is involved in carrying long-term memory:

These are required for the impulse to transfer from presynaptic to post-synaptic neuron:

Which part of the brain is responsible for higher cognitive functions such as thinking, reasoning, and problem-solving?

Which of the following is a disease in which the blood fails to clot?

Multiple alleles control inheritance of

Which of the following best characterizes the viruses with un-enveloped plus- (I point) strand RNA?

Glyceraldehyde & dihydroxy acetone are example of:

What is formed when the blastula folds inwards?

Through which of the following does rabies spread?

What is the cementing layer between two daughter cells called?

Carnivorous adaptation of plants is due to relatively low content of:

Lysozyme represent this basic structural level of protein is:

A reflex involving a sensory and a motor neuron is called such transmission.

Which of the following functions does dopamine serve?

The evolution of birds has long been a difficult issue for biologists until the discovery of the Archaeopteryx fossil in 1861. This ancient bird exhibited teeth, a long tail containing 20 vertebrae, and wings with movable fingers and claws. In light of the mentioned facts, who were the ancestors of the birds?

Which enzyme is secreted in an inactive state to prevent it from digesting its own cells?

Which of the following statements is correct about semilunar valves?

Membranous infoldings in bacteria that initiate DNA replication is:

Testes developed inside the abdomen. In which of the following structures do they lie before birth?

An orthopedic specialist observed the X-ray of the joint of a patient and detected hardening of the cartilage due to excess calcium deposit. Consequently, the joint was very stiff and crippled the patient. What was the patient suffering from?

What's the importance of krebs's cycle?

The total capacity of a human lung is 5 liters. What percentage of it is filled when one takes an extra deep breath?

Photosynthetic bacteria utilize H₂S instead of water and liberate one of the following instead of oxygen:

Fertilization of the ovum takes place in rabbits, men, and other placental mammals in:

Protein layers are embedded in lipid bilayers; this was explained by

Evolutionary progress towards the formation of organ systems in cnidarians includes the development of the enteron and:

What's the optimum pH of pepsin in the stomach?

Bacterial cell wall made up of:

The hepatitis that passes from mother to her child during pregnancy is:

Which of the following best describes the plasma membrane?

Penicillin blocks the active sites of an enzyme that many bacteria use in making cell walls. It is an example of:

A chemical substance that can react with an enzyme faster than a real substrate and without producing a product is

Which of the following is good evidence of an evolutionary pathway leading from reptiles to birds?

In the process of ovulation, which of the following structures sucks the egg released from alternate ovary, every month

This muscle controls the diameter of your blood vessels:

Mr. X & Mrs. X have the same genotype, i.e., IAi for blood group. What is the expected probability of the blood group of their children?

Anaerobic respiration, compared to aerobic respiration, produces?

How long does it take for an action potential to occur?

Which of the following are the genetically engineered bacteria that are used to make human growth hormone and insulin for diabetics?

Which of the following is the end product of anaerobic respiration?

Which of the following compounds is regarded as the precursor of many hormones like testosterone, progesterone, and estrogens?

Which one is the powerhouse of the cell?

At equilibrium, a scientist added more substrate and observed an increase in the rate of the reaction, which soon declined. He added some more substrate, but this time the rate of the reaction remained unaffected. What was the reason?

Earthworm is an example of:

It serves as a vector in genetic engineering.

Which cavities are present around the joints and contain a thin, oily fluid that reduces friction and keeps the joints moving freely?

Which phenomenon describes the production of asexual form by sexual form and vice versa?

The artificial selection in breeding provides strong evidence for evolution. What does this term mean?

What is the volume of blood pumped per minute by the left ventricle into the systemic circuit called?

After ovulation, the Graafian follicle converts into:

Which of the following does not favour the formation of large quantities of dilute urine?

Dry distillation of which of the following can be done to produce acetone?

Which of the following has only one orientation is space in the magnetic field?

Which of the following is different in Na⁺ (Z=11), Mg⁺² (Z=12) and AI⁺³ (Z=13)?

Which of the following is an example of a tertiary alkyl halide?

The radius of the first orbit of hydrogen is 0.53 Å. Which orbit has a radius of 4.77 Å?

Which of the following reactions can be used for the conversion of ethyl alcohol into acetaldehyde?

Which of the following will give an iodoform reaction on treatment with Na₂CO₃ and I₂?

The elimination reaction between alkyl halides and strong base takes place by two mechanisms, E1 and E2. How many steps are involved in each one of these?

What is the mass of one proton?

Which of the following is formed when form aldehyde is treated with oxidizing mixture (H₂SO₄+K₂Cr₂O₇)

Which of the following Is formed when excess of ethyl alcohol is treated with concentrated H₂SO₄ at low temperature?

CO₂ and SO₂ are two compounds. Which of the following best describes these two compounds?

What hybridization is present on carbon atoms in ethyne (C₂H₂)?

Enzyme show optimum activity between 37°C and 50°C It, however loses activity permanently above

Which of the following is formed when acetone is oxidized?

The nature of attraction that holds molecular crystals is:

The valence shell electronic configuration of an element is 4s² , 4p¹. To which group does the element belong?

Which of the following reactions has the same value of Kc and Kp?

Which of the following are the isomers of pentane?

Water rises in a capillary tube because of:

Which of the following is an amino acid?

What is the IUPAC name of stearic acid?

What is the oxidation number of Mn in K2MnO4?

When benzene reacts with isopropyl chloride in the presence of AlCl₃ as a Lewis acid, the product formed is isopropyl benzene. What is this reaction called?

Benzene is subjected to (1) Alkylation (2) Nitration (3) Oxidation, the product is:

7.6 grams of CS₂ is reacted with 12.8 g of O₂: CS₂ , + 3O₂ → CO₂ + 2SO₂limiting reactant ts:

What Is the IUPAC name of α, β-dimethyl valeric acid?

What is the IUPAC name of chloroform?

Which of the following temperatures is referred to as absolute zero?

An organic compound has C=40%, H=6.67% and O=53.3% What is the empirical formula of the compound?

Oxidation of Toluene by KMnO₄, the product is:

Organic compounds are classified into:

Which of the following best describes the ionic reaction of inorganic compounds?

Graph of volume versus pressure at constant temperature:

Isopropyl chloride is an example of:

Which type of isomerism do propanal and acetone exhibit?

What is the order of reaction if the unit of K is sec-1 ?

What volume of oxygen at STP required to burn 500 dm3 of ethene?

Ca (Z=20) forms an ionic bond with CI (Z=17). What is the chemical formula of calcium chloride?

Which of the following produce maleic anhydride on oxidation?

Oxidation of secondary propyl alcohol gives:

Which of the following conditions is required for maximum yield of ammonia through Haber's process?

Which of the following is true for a reversible reaction at equilibrium?

If a gas has 1 atm pressure, it is 25°C. What will be the volume change at 2 atm pressure?

Metallic property in a group of P-block element has a trend down the group:

Superoxide of Group I-A element (M) has the formula

Which pair of elements markedly differs from other members of their respective groups?

Which of the following is a covalent crystal?

What is the mathematical statement of the first law of thermodynamics?

In which spectral series is the far ultraviolet region of the electromagnetic spectrum found?

The ligand, diethylene triamine is an example of:

What Is ∆H equal to according to the first law of thermodynamics?

Why do transition elements form interstitial compounds?

What does the electric field around a charge represent?

A force 2F acting on a particle of mass 10 kg produces an acceleration of 30 m/s2. A force 5F acting on a particle of mass M produces and acceleration are 25 m/s2. What is the mass M?

Which law has a graph similar to the graph of an isothermal process?

Which of the following expression is constant for a freely falling body?

Induced FMF in A.C. generator can be increased by:

A semi-conductor diode can be used as:

What is the dot product of magnetic induction and unit area?

Soft cylindrical electrical conducting wire has resistance R. It is streat so that its length is doubled but its radius stays constant. What would be the new resistance?

The function of a main transformer is to convert:

1 J/sec is equals to:

Which law explains the relation between the amount of charges and the force between them?

1 radian is equal to

The property of the system that does not change during adiabatic change is:

The internal resistance of a battery is:

What will be the value of acceleration if a body of mass 0.5 kg is acted upon by a force of 10 N?

Radiations are dangerous to living organisms because they damage the cell by:

If the fundamental frequency of vibration of a string fixed both ends is 50H_z, the fourth harmonic will be:

On which principle does the transformer work?

The amount of energy required to move an electron of charge (e) by the application of a 1-volt potential difference is equal to

The distance between two consecutive nodes or anti-nodes is:

The process in which no external work is performed is called:

In beta positive decay, the nuclear number is:

The product of frequency and wavelength of a wave equals to:

In vibratory motion the maximum displacement of the body on either side of its equilibrium position is called:

Which of the following refers to the DC current that does not change its intensity?

The electric potential sets across the terminals of a battery is called:

The energy of light is determined by its:

If 1 transformer has 500 turns on the primary coil and 250 turns on the secondary coil, then

Longitudinal waves exhibit:

Two capacitors 6μf and 12μf are in series connected across a 200 volts D.C. supply, Calculate the charges on each capacitor, respectively.

The ratio between linear velocity and radius equals to:

A ball is thrown horizontally with 19.6 m/s. After 2 seconds it's horizontal velocity component will be:

In the projectile motion, the acceleration in the horizontal direction:

The speed of sound at 0°C in air is 332 m/s What will be the speed of sound at 50°C?

Which of the following corresponds to the momentum of a photon?

Which of the following defines the change in magnetic flux per unit area?

What does the magnetic flux measure?

If the wavelength of a light is 3×10-7, then what is it its frequency?

The change in electric potential with respect to distance equals to:

Due to sudden rain, which of the following is true for the car moving on the road?

1 kilowatt-hour (kWh) equals to:

An atom makes a transition from a state of energy E₂ to one of lower energy E₁. Which of the following gives the wavelength of the radiation emitted, in terms of the Planck's constant h and the speed of light e?

Half-life of radon gas is:

Which of the following are the application of Doppler's effect?

The ohm's law is applicable if:

1 N/C equals to:

What is the time rate of change of linear momentum?

Which of the following results in the centripetal acceleration being produced in a body?

A wheel of a bike rotates from rest and achieves 6.28 radians/sec in 2 seconds. What will be its angular acceleration?

Which statement is the best for electric flux of a point charge?

Two bodies of masses 10 kg and 40 kg are dropped from the same height at the same time. Value of which of the following remains the same during the motion of the two bodies?

A body of mass 4 kg is moving a circle of radius 2m. If the body moves round a complete circle, what is the work done by the body?

The Sun began to ____ behind the mountains, casting a warm and beautiful glow across the valley.

Which article should be used in the blank to make the sentence grammatically correct."He lives in ________ old house"

Choose the sentence with correct use of apostrophe in possessives:

Nobody known when fiction started. Perhaps the first storyteller was a prehistoric mother trying to explain the world to her children, or maybe it was a hunter talking about his adventure around the campfire. Who can tell? What we do know, though, is that storytelling was a purely oral activity around 800 BC . Myths and tales were passed down by word of mouth and had to be popularized by each new generation of storytellers. This oral tradition is the only example of Homer, a professional storyteller who lived in the eighth century BC.It is stressed in the passage that storytelling:

What will be suitable response to the question: How was your day at school?'

Which sentence has correct grammatical and stye structure?

Which of the following sentences has the correct word order?

Nobody knows when fiction started. Perhaps the first storyteller was a prehistoric mother trying to explain the world to her children, or maybe it was a hunter talking about his adventure around the campfire. Who can tell? What we do know, though, is that storytelling was a purely oral activity around 800 BC . Myths and tales were passed down by word of mouth and got to be popularized by each new generation of storytellers. This oral tradition is the only example of Homer, a professional storyteller who lived in the eighth century BC.Myths were passed down by:

Identify the fragment in the following options:

Which sentence demonstrates the correct use of past tense?

What is the antonym of "generous"?

Identify the sentence with incorrect use of punctuation.

Identify the error in the sentence: "His the car is red."

After a long day at work, Sarah found ______ In her favorite book, escaping into a captivating world.

Identity the mistake in the use of prepositions in the following sentence:She is good at cooking in the kitchen.

Identify the sentence with the incorrect use of apostrophe:

Which sentence demonstrates correct subject-verb agreement?

Nobody known when fiction started. Perhaps the first storyteller was a prehistoric mother trying to explain the world to her children, or maybe it was a hunter talking about his adventure around the campfire. Who can tell? What we do know, though, is that storytelling was a purely oral activity around 800 BC . Myths and tales were passed down by word of mouth and had to be popularized by each new generation of storytellers. This oral tradition is the only example of Homer, a professional storyteller who lived in the eighth century BC.The contextual meaning of fiction is

Sara is five ranks below the top student, Faiq, in a class of 50 students. What is Sara's rank from the bottom of the class?

Read the two statements carefully then choose the best from the options to follow:Statement 1- It was raining cats and dogs.Statement 2-The football match was cancelled

Look carefully at the symbols to find the pattern. Select the pattern from the options given below:

Read the statement and following courses of action carefully. Then select the most appropriateoptions.Statement English language skills of students in XYZ school are below the town average.Course of Action:ⅰAll English language teachers in XYZ school, should be replaced with good ones.ⅱEnglish language teachers in XYZ school, should be provided a training course

If blue is called green,' green is called 'white,' white is called 'red, and red is called 'yellow,' what is the color of milk?

Essa is younger than Moosa.X = Twice Essa's ageY = Moosa's ageWhich of the following is true about this information?