Dependent cause/ Independent causes:

I. The construction of dams has created an obstruction in the migration of animals.

II. The animals of Amazon have turned into ferocious beasts, that are damaging the property as well as a threat to the lives of people.

PreMedPK MDCAT Mock 4
Logical Reasoning

Statement:

According to reports, the childrens below age 10 are being aggressive because of mobile phones.

Course of Action:

I. Parents needs to be strict with their child.

II. Parents need to be concerned and limit their screening time.

PreMedPK MDCAT Mock 4
Logical Reasoning

Which of the following is classified as a main rock?

PreMedPK MDCAT Mock 4
Logical Reasoning

During the past year, Jamshed saw more movies than Sadia.

Sadia saw fewer movies than Dawood.

Dawood saw more movies than Jamshed.

If the first two statements are true, the third statement is

PreMedPK MDCAT Mock 4
Logical Reasoning

Complete the series AB, EF, __ , MN

PreMedPK MDCAT Mock 4
Logical Reasoning

Essential parts:

What should come next to it book

PreMedPK MDCAT Mock 4
Logical Reasoning

The coloumb constant is defined as: (E stands for epsilon here)

PreMedPK MDCAT Mock 4
Physics
Electrostatics

When deuterium and tritium fuse together they form?

PreMedPK MDCAT Mock 4
Physics
Nuclear Physics

Critical angle is the angle of incidence in the denser medium for which the angle of refraction in the rarer medium is equal to:

PreMedPK MDCAT Mock 4
Physics
Wave Motion and Sound

A test charge of 23 μC is at a point P where an external electric field is directed to the left and has a magnitude of 3.1 x106 N/C.

If the test charge is replaced with another test charge of 13 μC, what happens to the external electric field at P?

PreMedPK MDCAT Mock 4
Physics
Electrostatics

The magnetic field, B, produced in a solenoid depends on:

PreMedPK MDCAT Mock 4
Physics
Magnetism and Electromagnetic Induction

When an object is thrown upward, it rises to height h. How high is the object in terms of h, when it has lost ⅓ of its original kinetic energy?:

PreMedPK MDCAT Mock 4
Physics
Work, Power and Energy

Two point charges attract each other with an electric force of magnitude F. If the charge on one of the particles is reduced to one-half its original value and the distance between the particles is doubled, what is the resulting magnitude of the electric force between them?

PreMedPK MDCAT Mock 4
Physics
Electrostatics

This is the following question:

PreMedPK MDCAT Mock 4
Physics
Work, Power & Energy

The fractional change in resistance per kelvin is known as:

PreMedPK MDCAT Mock 4
Physics
Current Electricity

Two identical bodies have a velocity ratio 2 : 3. What is the ratio of kinetic energies?

PreMedPK MDCAT Mock 4
Physics
Work, Power and Energy

Three resistors of 6 Ohms each, can be connected in all possible ways. The highest value of resistance can be obtained (in ohms) be ___________.

PreMedPK MDCAT Mock 4
Physics
Current Electricity

Is it possible to separate north pole only from bar magnet?

PreMedPK MDCAT Mock 4
Physics
Magnetism and Electromagnetic Induction

A gas is enclosed in a container fitted with a piston of cross-sectional area of 0.10 m2. The pressure of the gas is maintained at 8000 N/m2. When heat is slowly transferred, the piston is pushed up through a distance of 4.0 cm. If 42 J heat is transferred to the system during the expansion, what is the change in the internal energy of the system?

PreMedPK MDCAT Mock 4
Physics
Work, Power and Energy

The energy supplied by the cell to the charge carriers is derived from the conversion of:

PreMedPK MDCAT Mock 4
Physics
Electrostatics

Identify the example/s of Static Equilibrium:

I. A book lying on a horizontal table
II. A building
III. A bridge

PreMedPK MDCAT Mock 4
Physics
Forces and Motion

Oil droplets of mass m and charge q are dropped between two horizontal parallel plates. Air resistance is negligible. The droplets are falling at constant velocity when electric field strength between the plates is E. Which of the following is true?

PreMedPK MDCAT Mock 4
Physics
Electrostatics

The temperature coefficient of resistance is expressed in :

PreMedPK MDCAT Mock 4
Physics
Current Electricity

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

PreMedPK MDCAT Mock 4
Physics
Wave Motion and Sound

If two sounds have the same wavelength in air at the same temperature, what other property must they also have in common?

Intensity
Amplitude
Frequency
PreMedPK MDCAT Mock 4
Physics
Wave Motion and Sound

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

PreMedPK MDCAT Mock 4
Physics
Circular Motion and Momentum

A ball falls vertically and bounces on the ground. The following statements are about the forces acting while the ball is in contact with the ground. Which statement is correct?

PreMedPK MDCAT Mock 4
Physics
Forces and Motion

An electron is situated midway between two parallel plates 0.5 cm apart. One of the plates is maintained at a potential of 60 volts above the other. The force on the electron is (e = -1.6×10-19)

PreMedPK MDCAT Mock 4
Physics
Electrostatics

The flux is the region where magnetic field:

PreMedPK MDCAT Mock 4
Physics
Magnetism and Electromagnetic Induction

If a cell of emf 2V and internal resistance 0.5 ohm is connected across a resistance R, the current that flows is the same as that when a cell of emf 1.5 V and internal resistance 0.3 ohms is connected across the same resistor. Then R= Ohm.

PreMedPK MDCAT Mock 4
Physics
Current Electricity

The nuclear equation shown has a term missing. What is represented by the missing term?

PreMedPK MDCAT Mock 4
Physics
Nuclear Physics

Which of the following statement shows that no work is done?

PreMedPK MDCAT Mock 4
Physics
Work, Power and Energy

Which of the following is an instrument for monitoring radiations:

PreMedPK MDCAT Mock 4
Physics
Nuclear Physics

An object whose mass is 100 g starts from rest and moves with constant acceleration of 20 cm/s2. At the end of 8 s its momentum is ____ in g cm/s.

PreMedPK MDCAT Mock 4
Physics
Circular Motion and Momentum

If a cell of emf 2V and internal resistance 0.5 ohm is connected across a resistance R, the current that flows is same as that when a cell of emf 1.5 V and internal resistance 0.3 ohm is connected across the same resistor. Then R=_________Ohm.

PreMedPK MDCAT Mock 4
Physics
Current Electricity

The number of down quarks in a proton is:

PreMedPK MDCAT Mock 4
Physics
Nuclear Physics

On a planet, a vertically-launched projectile takes 12.5 s to return to its starting position. The projectile gains a maximum height of 170 m. The planet does not have an atmosphere. What is the acceleration of free fall on this planet?

PreMedPK MDCAT Mock 4
Physics
Forces and Motion

Two forces, 5 N and 10 N are acting at ‘O’ and ‘P’ respectively on a uniform meter rod suspended at the position of center of gravity 50cm mark as shown in the figure.

PreMedPK MDCAT Mock 4
Physics
Forces and Motion

1/Req = 1/Rl + 1/R2 + 1/R3 + ….. +1/Rn is the combination in

PreMedPK MDCAT Mock 4
Physics
Current Electricity

A _____ is a positively charged particle with properties similar to the α-particle. Its mass is one fourth and charge is one half of that of an α-particle. It is smaller in size and carries less energy at the same velocity.

PreMedPK MDCAT Mock 4
Physics
Nuclear Physics

Which of the following statements is true?

PreMedPK MDCAT Mock 4
Physics
Current Electricity

A plane is moving with speed v at a height ‘h’ in the horizontal direction. The time taken to reach the ground is:

PreMedPK MDCAT Mock 4
Physics
Forces and Motion

If μ is the permeability of the medium and ∈ permittivity of the medium then the value of √ 1 / μ . ∈. Is equal to ______.

PreMedPK MDCAT Mock 4
Physics
Wave Motion and Sound
Magnetism and Electromagnetic Induction

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

PreMedPK MDCAT Mock 4
Physics
Wave Motion and Sound

When a body moves in a circle the angle between its linear velocity and angular velocity is always :

PreMedPK MDCAT Mock 4
Physics
Circular Motion & Momentum

The power loss ? in a resistor is calculated using the formula: ? =?2/R

The uncertainty in the potential difference ? is 3% and the uncertainty in the resistance ? is 2%. What is the uncertainty in ??

PreMedPK MDCAT Mock 4
Physics
Current Electricity

A body is hanging from a rigid support by an extensible string of length L. It is struck inelastically by an identical body of mass m with horizontal velocity v =√2gl , the tension in the string increases just after striking by:

PreMedPK MDCAT Mock 4
Physics
Circular Motion and Momentum

A first harmonic stationary sound wave is produced in the air of the cylinder, which is half-filled with water. More water is added to the cylinder, and now first harmonic stationary wave is produced with a different frequency. What is the change in frequency and nature of displacement in air at the surface of the water?

PreMedPK MDCAT Mock 4
Physics
Wave Motion and Sound

A star moving away from earth shows ____.

PreMedPK MDCAT Mock 4
Physics
Wave Motion and Sound

A ball moving horizontally with speed ‘v’ strikes the bob of a simple pendulum at rest. The mass of the bob is equal to that of the ball if the collision is elastic the bob will rise to a height:

PreMedPK MDCAT Mock 4
Physics
Circular Motion and Momentum

What will be the expression for the observed frequency, if the source is moving towards the observer?

PreMedPK MDCAT Mock 4
Physics
Wave Motion and Sound

The question is as follows:

PreMedPK MDCAT Mock 4
Physics
Nuclear Physics

A pendulum undergoes simple harmonic motion. The phase difference between the displacement and the acceleration of the particle is:

PreMedPK MDCAT Mock 4
Physics
Wave Motion and Sound

If displacement-time graph is a curve, which of the following is correct:

PreMedPK MDCAT Mock 4
Physics
Forces and Motion

The unstable atom means?

PreMedPK MDCAT Mock 4
Physics
Nuclear Physics

When a potential difference is applied across the ends of a uniform wire of length l and radius r, a current I flows in the wire. If same potential difference is applied to the ends of another wire of the same material but of length 2l and radius 2r, the current in the wire is:

PreMedPK MDCAT Mock 4
Physics
Current Electricity

A galvanometer has a resistance of 20 ohms and a full-scale deflection when a current of 0.001 ampere flows in it. What is the value of the series resistance to convert it into a voltmeter of range 10 volts?

PreMedPK MDCAT Mock 4
Physics
Magnetism and Electromagnetic Induction

The charge on the electron and proton is reduced to half. If the present value of Rydberg constant is ?, then the new value of Rydberg constant will be:

PreMedPK MDCAT Mock 4
Physics
Current Electricity

In an inelastic collision, Momentum is _____ and Kinetic Energy is ______ respectively.

PreMedPK MDCAT Mock 4
Physics
Forces and Motion

Power developed by a person on eating 100g of ice per minute is:

PreMedPK MDCAT Mock 4
Physics
Work, Power & Energy

In the second period of elements, although oxygen lies next to nitrogen yet its ionization first energy is lower than that of nitrogen because?

PreMedPK MDCAT Mock 4
Chemistry
Chemical Bonding

The ionization energy of groups ____ shows an abnormal trend?

PreMedPK MDCAT Mock 4
Chemistry
Chemical Bonding

In Cannizzaro’s reaction, Benzyl alcohol is obtained from?

PreMedPK MDCAT Mock 4
Chemistry
Alcohols, Phenols and Ethers
Aldehydes and Ketones

The smallest number of molecules are present in?

PreMedPK MDCAT Mock 4
Chemistry
Introduction to Fundamental Concepts of Chemistry

Molar heat of vaporization is the amount of heat required to convert one mole of:

PreMedPK MDCAT Mock 4
Chemistry
Thermochemistry

Solution contains 85.5 g of sucrose (C12H22O11) in 250 cm3. What is its molarity?

PreMedPK MDCAT Mock 4
Chemistry
Introduction to Fundamental Concepts of Chemistry

The geometry of H2S and its dipole moment are:

PreMedPK MDCAT Mock 4
Chemistry
Chemical Bonding

Which molecule is planar?

PreMedPK MDCAT Mock 4
Chemistry
Chemical Bonding

One Calorie is equivalent to:

PreMedPK MDCAT Mock 4
Chemistry
Thermochemistry

Cyanohydrins can be synthesized from ketones through:

PreMedPK MDCAT Mock 4
Chemistry
Aldehydes and Ketones

Which among the following gives ppt. with terminal alkynyl hydrogen?

PreMedPK MDCAT Mock 4
Chemistry
Hydrocarbons

The enthalpy of certain reactions at 273 K is -20.75 kJ. The enthalpy of the same reaction at 373 K (if heat capacities of reactants and products are the same) will be:

PreMedPK MDCAT Mock 4
Chemistry
Thermochemistry

Glucose(C6H12O6) is the most important nutrient in a cell for generating chemical potential energy, what is the mass percent of carbon in 1.5g of sample?

PreMedPK MDCAT Mock 4
Chemistry
Introduction to Fundamental Concepts of Chemistry

What is the emf of Zn-Cu cell ?

PreMedPK MDCAT Mock 4
Chemistry
Electrochemistry

The heat of a reaction can be calculated by using:

PreMedPK MDCAT Mock 4
Chemistry
Thermochemistry

Which group gives a yellow precipitate of triiodomethane when warmed with alkaline aqueous iodine?

PreMedPK MDCAT Mock 4
Chemistry
Aldehydes and Ketones

Those elements, with an electronic configuration of valence shell ns2 np6 show little tendency to react chemically, are called?

PreMedPK MDCAT Mock 4
Chemistry
s and p Block Elements

The stability in the following structure is due to the:

PreMedPK MDCAT Mock 4
Chemistry
Chemical Bonding

Catalytic hydrogenation of alkenes exhibits:

PreMedPK MDCAT Mock 4
Chemistry
Hydrocarbons

In CCl4, all C-Cl bonds are ______ but the molecule is overall _____.

PreMedPK MDCAT Mock 4
Chemistry
Chemical Bonding

How many chain isomers are shown by C5H12?

PreMedPK MDCAT Mock 4
Chemistry
Hydrocarbons

Study the following facts:

Zn → Zn+2 + 2e― Eo = +0.76 V

Cu → Cu+2 + 2e― Eo = – 0.34 V

PreMedPK MDCAT Mock 4
Chemistry
Electrochemistry

line spectrum of sodium contains ____ colored lines separated by a definite distance

PreMedPK MDCAT Mock 4
Chemistry
s and p Block Elements

According to coulomb’s law, the electrostatic forces of attraction between electron and nucleus are ______ to its square of the radius.

PreMedPK MDCAT Mock 4
Chemistry
Atomic Structure

Electrophile in sulphonation of benzene is:

PreMedPK MDCAT Mock 4
Chemistry
Hydrocarbons

Beryllium(Be) shows the diagonal relationship with:

PreMedPK MDCAT Mock 4
Chemistry
s and p Block Elements

What is the % relative humidity at 25 C and 0.01876 atm if the vapor pressure of water is 23.76 mm Hg.

PreMedPK MDCAT Mock 4
Chemistry
States of Matter – Gases, Liquids and Solids

The order of reaction for which half-life is inversely proportional to the concentration of reaction is?

PreMedPK MDCAT Mock 4
Chemistry
Reaction Kinetics

The rate of a reaction in general can be increased by all the following factors except:

PreMedPK MDCAT Mock 4
Chemistry
Reaction Kinetics

For a reaction given below

C(s) + O2 (g) -> CO2 (g) + 394 kJ / mol

The enthalpy of reaction is

PreMedPK MDCAT Mock 4
Chemistry
Thermochemistry

Why does Cr show 3d54s1 configuration instead of 3d44s2?

PreMedPK MDCAT Mock 4
Chemistry
s and p Block Elements

Fused Bauxite is electrolyzed to get ____?

PreMedPK MDCAT Mock 4
Chemistry
Electrochemistry

In the figure given below, the electron flow in external circuit is from:

PreMedPK MDCAT Mock 4
Chemistry
Electrochemistry

By heating 25g of limestone (CaCO3) , the weight of carbon dioxide produced is

PreMedPK MDCAT Mock 4
Chemistry
s and p Block Elements

The shielding effect increases?

PreMedPK MDCAT Mock 4
Chemistry
s and p Block Elements

A child’s balloon has a volume 3.80 dm3, when the temperature is 35°C. If the balloon is put in a refrigerator and cooled to 5°c, the approximate volume of the balloon is (assume pressure inside the balloon is equal to atmospheric pressure):

PreMedPK MDCAT Mock 4
Chemistry
States of Matter – Gases, Liquids and Solids

Three reactions are given

i. H2SO4 + 2HF ⟶ F2 + SO2 + 2H2O

ii. H2SO4 + 2HBr ⟶ Br2 + SO2 + 2H2O

iii. H2SO4 + 8HI ⟶ 4I2 + H2S + 4H2O

The strongest reducing agent in these reactions is:

PreMedPK MDCAT Mock 4
Chemistry
s and p Block Elements

What would be the major product of the following reaction?

PreMedPK MDCAT Mock 4
Chemistry
Aldehydes and Ketones

Keeping inview the values of standard reduction potential given above, which one of the following would you select as a feasible redox chemical reaction?

PreMedPK MDCAT Mock 4
Chemistry
Electrochemistry

1 liter of a gas weighs 2 g at 300 K and 1 atm pressure. If the pressure is made 0.75 atm, at which of the following temperatures will 1 L of the same gas weigh 1 g?

PreMedPK MDCAT Mock 4
Chemistry
States of Matter – Gases, Liquids and Solids

When the concentration of reactants are unit, the rate of reaction is then called ______?

PreMedPK MDCAT Mock 4
Chemistry
Reaction Kinetics

Which of the following compounds will form a hydrocarbon on reaction with Grignard reagent?

PreMedPK MDCAT Mock 4
Chemistry
Hydrocarbons

The chemical reaction in which reactions require high amount of activation energy are generally:

PreMedPK MDCAT Mock 4
Chemistry
Reaction Kinetics

In the reaction, 2SO2 (g) + O2 ⇌ 2SO3 (g) ∆H= +X cal most favorable conditions of temperature and pressure for a greater yield of SO2 are:

PreMedPK MDCAT Mock 4
Chemistry
Chemical Equilibrium

The test used to distinguish among primary, secondary, and tertiary alcohols is:

PreMedPK MDCAT Mock 4
Chemistry
Alcohols, Phenols and Ethers

The decomposition of phosphorus pentachloride in the presence of moisture takes place by the following mechanism.

The rate equation for this reaction will be:

PreMedPK MDCAT Mock 4
Chemistry
Reaction Kinetics

Benzene in the presence of AlCl3 produces acetophenone when reacts with:

PreMedPK MDCAT Mock 4
Chemistry
Hydrocarbons

Half-life for 1st order reactions is:

PreMedPK MDCAT Mock 4
Chemistry
Reaction Kinetics

The %age of nitrogen in ammonium nitrate is

PreMedPK MDCAT Mock 4
Chemistry
Introduction to Fundamental Concepts of Chemistry

Which of the following is a factor affecting the rate of reaction?

PreMedPK MDCAT Mock 4
Chemistry
Reaction Kinetics

When we calculate the radii of Hydrogen atom by this equation r = 0.529A (n2) where n = 1, 2, 3, 4, the distance between orbits of hydrogen atom will:

PreMedPK MDCAT Mock 4
Chemistry
Atomic Structure

Before a collision, molecules

PreMedPK MDCAT Mock 4
Chemistry
Reaction Kinetics

Some substances lack definite heats of fusion. These substances are:

PreMedPK MDCAT Mock 4
Chemistry
Thermochemistry

Purple non-sulphur bacteria is an example of which of the following?

PreMedPK MDCAT Mock 4
Biology
Kingdom Prokaryote

Due to the presence of a common ion, the solubility of a salt:

PreMedPK MDCAT Mock 4
Chemistry
Chemical Equilibrium

Which of the following is not a true characteristic of spermatogonia?

PreMedPK MDCAT Mock 4
Biology
Reproduction

The function of a cell wall in prokaryotes is:

PreMedPK MDCAT Mock 4
Biology
Kingdom Prokaryote

When a muscle bends one part upon the other, it is called

PreMedPK MDCAT Mock 4
Biology
Support and Movement

A pure breeding plant with the dominant phenotype of character P and the recessive phenotype of character Q was crossed with another pure breeding plant with the recessive phenotype of character P and the dominant phenotype of Q. The offspring of this cross were crossed with a double homozygous recessive for P and Q and the following results were obtained:

22 were phenotypically dominant for P and recessive for Q
5 were phenotypically dominant for both P and Q
4 were phenotypically recessive for both P and Q
24 were phenotypically recessive for P and dominant for Q
Which one of the following types of Inheritance is illustrated by these results?

PreMedPK MDCAT Mock 4
Biology
Variation and Genetics

Enzyme substrate specificity is a result of which property of enzymes?

PreMedPK MDCAT Mock 4
Biology
Enzymes

The respiratory pigment, which has much higher affinity to combine with oxygen is:

PreMedPK MDCAT Mock 4
Biology
Gaseous Exchange

The diagram represents the human respiratory system.

While inhalation, which of the labelled muscles contract?

PreMedPK MDCAT Mock 4
Biology
Gaseous Exchange

The diagram shows some of the muscles and bones of the human arm.

PreMedPK MDCAT Mock 4
Biology
Support and Movement

Tay Sach’s disease is caused by absence of enzyme required to breakdown ____________.

PreMedPK MDCAT Mock 4
Biology
Cell Structure and Function

The characteristics and an example of a synovial joint in humans is:

PreMedPK MDCAT Mock 4
Biology
Support and Movement

Antibodies can be digested by using which of the following types of enzymes?

PreMedPK MDCAT Mock 4
Biology
Enzymes

Hexokinase is used in:

PreMedPK MDCAT Mock 4
Biology
Bioenergetics

The inflammation of bronchi or bronchioles is known as ___.

PreMedPK MDCAT Mock 4
Biology
Gaseous Exchange

Hepatic and Pancreatic secretions are also stimulated by a hormone called:

PreMedPK MDCAT Mock 4
Biology
Coordination and Control

The hormone labeled X in the diagram is:

PreMedPK MDCAT Mock 4
Biology
Reproduction

Vertebrae of the neck are called:

PreMedPK MDCAT Mock 4
Biology
Support and Movement

Proteoglycan in cartilages (which consists of polysaccharides) are also attached to:

PreMedPK MDCAT Mock 4
Biology
Biological Molecules

α(1→4) glycosidic linkage is present in

PreMedPK MDCAT Mock 4
Biology
Biological Molecules

In a typical compound microscope the resolution is 2 μm. Which is about _____ that of naked eye.

PreMedPK MDCAT Mock 4
Biology
Cell Structure and Function

Monosynaptic reflex arc consists of:

PreMedPK MDCAT Mock 4
Biology
Coordination and Control

Whenever a muscle contracts, a sarcomere can be shortened up to _____ % of its total length.

PreMedPK MDCAT Mock 4
Biology
Support and Movement

Male and female sea urchins release their sperm and eggs Into the water where fertilization takes place. How can their reproduction be described?

PreMedPK MDCAT Mock 4
Biology
Reproduction

What is critical in photoperiodism?

PreMedPK MDCAT Mock 4
Biology
Bioenergetics
Coordination and Control

Carotenoids perform protective function in which of the following organism?

PreMedPK MDCAT Mock 4
Biology
Biological Molecules

What are the distinguishing features of fibrous proteins?

PreMedPK MDCAT Mock 4
Biology
Biological Molecules

Ptyalin can convert starch into:

PreMedPK MDCAT Mock 4
Biology
Biological Molecules

Nuclear Histones are conjugated molecules that function in ___.

PreMedPK MDCAT Mock 4
Biology
Cell Structure and Function

Which disorder among the following CANNOT be detected by amniocentesis?..

PreMedPK MDCAT Mock 4
Biology
Reproduction

The area on the left hemisphere related to speech is called?

PreMedPK MDCAT Mock 4
Biology
Coordination and Control

_____ refers to the breakdown or removal of the capsid

PreMedPK MDCAT Mock 4
Biology
Bio-diversity | Variety of Life

An example of competitive inhibition of an enzyme is the inhibition of;

PreMedPK MDCAT Mock 4
Biology
Enzymes

Which of the following statements is true about ATP?

PreMedPK MDCAT Mock 4
Biology
Bioenergetics

Which one of the following is present outside the plasma membrane but inside the cell wall?

PreMedPK MDCAT Mock 4
Biology
Cell Structure and Function

Which two reactions occur during photophosphorylation?

PreMedPK MDCAT Mock 4
Biology
Bioenergetics

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.

PreMedPK MDCAT Mock 4
Biology
Cell Structure and Function

Taxonomy includes the arrangement of organisms into different taxa. Which of the following represents the correct hierarchy of various taxa of classification?

PreMedPK MDCAT Mock 4
Biology
Bio-diversity | Variety of Life

E. coli is

PreMedPK MDCAT Mock 4
Biology
Kingdom Prokaryote

Calcium, during muscle contraction binds with?

PreMedPK MDCAT Mock 4
Biology
Coordination and Control

Which of the following is a hypnotic drug?

PreMedPK MDCAT Mock 4
Biology
Coordination and Control

In which organism males are haploid?

PreMedPK MDCAT Mock 4
Biology
Reproduction

The venous blood in tissues has carbon dioxide:

PreMedPK MDCAT Mock 4
Biology
Gaseous Exchange

It is the most energy rich compound.

PreMedPK MDCAT Mock 4
Biology
Bioenergetics

Diaphragm is a sheet of:

PreMedPK MDCAT Mock 4
Biology
Gaseous Exchange

A child with AB blood group who was born to a mother of the genotype IAIA cannot have the father of the genotype:

PreMedPK MDCAT Mock 4
Biology
Variation and Genetics

A family of five daughters is expecting another delivery. The chance of its beings a son is?

PreMedPK MDCAT Mock 4
Biology
Variation and Genetics

Stretch receptors are present in the _________ of tetrapods.

PreMedPK MDCAT Mock 4
Biology
Coordination and Control

A person was married to his cousin and both are heterozygous for Sickle Cell anemia. Among their four kids, what will be proportion of homozygotes?

PreMedPK MDCAT Mock 4
Biology
Variation and Genetics

The diagram shows a section through the human brain.

PreMedPK MDCAT Mock 4
Biology
Coordination and Control

Amoeboid movements and movement of cyclosis is due to?

PreMedPK MDCAT Mock 4
Biology
Cell Structure and Function

Sequence of amino acids, in a polypeptide chain of protein molecule, corresponds to the sequence of nucleotides on mRNA for that protein. If the reading frame of mRNA for a human protein is 993 nucleotides, including a stop codon at the end, how many amino acids would be incorporated in the polypeptide chain?

PreMedPK MDCAT Mock 4
Biology
Biological Molecules

Sarcoplasmic reticulum is like endoplasmic reticulum but devoid of ______ and exhibit a highly specialized ________ pattern.

PreMedPK MDCAT Mock 4
Biology
Cell Structure and Function

There are 3 stages of HIV infection, which sequence is correct

PreMedPK MDCAT Mock 4
Biology
Bio-diversity | Variety of Life

What is true for pili and flagella-like structures of bacteria?

PreMedPK MDCAT Mock 4
Biology
Kingdom Prokaryote

Referring to sexual reproduction, humans are:

PreMedPK MDCAT Mock 4
Biology
Reproduction

A person with blood group A will not produce:

PreMedPK MDCAT Mock 4
Biology
Variation and Genetics

Four events in the transmission of nerve impulses across synapses are:

I. depolarisation of the presynaptic membrane

II. propagation of postsynaptic action potential

III. reabsorption of the transmitter substance

IV. release of transmitter substance into the synaptic cleft

In which sequence do these events occur?

FIRST -> LAST

PreMedPK MDCAT Mock 4
Biology
Coordination and Control

Which of the following is correct for the given structure?

PreMedPK MDCAT Mock 4
Biology
Cell Structure and Function

Select the correct statement regarding the specific disorder of muscular or skeletal system.

PreMedPK MDCAT Mock 4
Biology
Support and Movement

The stomata arc closes at which of the following temperature? (In centigrade)

PreMedPK MDCAT Mock 4
Biology
Bioenergetics

Read the passage below to answer the question:

Hemophilia is a disorder in which blood fails to clot. Saad, a male hemophiliac, marries Sara, a normal woman and together they have four children, two boys (Ahmed and Ali) and two girls (Alia and Ayesha). None of the children display the symptoms of Hemophilia. Ahmed, Ali, Ayesha, and Ali all marry normal individuals and have children. None of Ahmeds or Ali’s children, male or female, display symptoms of hemophilia, but the sons of Alia and Ayesha display symptoms of hemophilia while the daughters of Alia and Ayesha do not.

If one of Ali’s daughters marries a normal man,what is the probability that one of their children will display symptoms of hemophilia:

PreMedPK MDCAT Mock 4
Biology
Variation and Genetics

Identify the wrong statements.

(a) The substrate binds to active site of enzyme and does not fit into active site

(b) The binding of substrate induces the enzyme to alter its shape

(c) Chemical bonds of substrate break down not to form new enzyme-product complex

(d) The enzyme releases the products of the reaction and runs through catalytic cycle once again

PreMedPK MDCAT Mock 4
Biology
Enzymes

Estimating relative CO2consumption or O2release during photosynthesis at different wavelengths of light, is termed as:

PreMedPK MDCAT Mock 4
Biology
Bioenergetics

Which of the following strategies of enzymatic inhibition is used by noncompetitive inhibitors?

PreMedPK MDCAT Mock 4
Biology
Enzymes

Female rabbits are:

PreMedPK MDCAT Mock 4
Biology
Reproduction

The following flowchart depicts the steps of the Calvin Cycle. Which option, according to you, fits in as the correct answer of the missing step?

PreMedPK MDCAT Mock 4
Biology
Bioenergetics

Which of the following organelles are present in all the bacteria?

PreMedPK MDCAT Mock 4
Biology
Kingdom Prokaryote

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

PreMedPK MDCAT Mock 4
Biology
Variation and Genetics

In the following question, four alternative meanings of a word are given. Select the nearest correct meaning of the word given.

NEOLOGISM

PreMedPK MDCAT Mock 4
English
Key Vocabulary

Complete the sentence by choosing the most appropriate option, from the given lettered choices (A to E) below:

It is quite ______ for poor people to be happier than rich people.

PreMedPK MDCAT Mock 4
English
Fill in the blank

The word opposite in meaning to capacious is:

PreMedPK MDCAT Mock 4
English
Key Vocabulary

Select the word or phrase which is closest in meaning to the underlined words.

Due to his continuous mischievous activities, he has become a rogue person.

PreMedPK MDCAT Mock 4
English
Key Vocabulary

Choose the correct sentence.Choose the correct sentence.

PreMedPK MDCAT Mock 4
English
Grammar and Punctuation