NUMS MDCAT 2020

Negative feedback mechanism is the characteristic of which class?

The function of papillary muscles is to:

Choose the correct pathway for the flow of blood:

Intrinsic factor is secreted by:

Gaseous exchange in plants takes place through the:

Translocation of organic solutes in plants takes place through:

The only vein in human carrying oxygenated blood is:

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

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

Autoimmune diseases act at the principle of:

Urine leaves the kidney through a duct called:

Digestion of which food components starts from the oral cavity?

In the human gut chylomicrons are formed by the combination of:

Dark reaction of photosynthesis takes place in _______ of the chloroplast.

Which of the following occurs in the body in response to the secretion of Glucagon?

Almost all freshwater animals and most marine vertebrates are:

In a marine environment, the ion secreted by the kidney is:

Which organ is called the body thermostat?

Which of the following substances helps to concentrate urine?

The multinucleated mass of the bone-breaking cells is called:

Chief material present in the cell wall of plants, fungal, and prokaryotic cells is:

Which type of leucoplasts store lipids?

Which type of movement through the cell membrane is not an energy-consuming process?

What is the role of cholesterol in the cell membrane?

Fibers of the extracellular matrix are attached to___________ plasma membrane:

_______ organelles are involved in the synthesis of the plant cell wall.

Select the pair of organs, that contains a large number of mitochondria:

Which of the following cells does not have a nucleus?

The most abundant organic compounds in a mammalian cell are:

The second most abundant bio element in the human body is:

Lecithin is formed by combining phosphatidic acid with ______:

NAD is an example of ______:

What would be the number of nucleotides for a protein molecule of about 142 amino acids?

The basic structural framework of all types of membranes are:

Non-protein and organic, detachable co-factors are called:

When an inhibitor binds to an enzyme other than the active site and alters its structure, then it is called:

Cyanides are potent poisons of the living organism and can kill by inhibiting _____, essential for cellular respiration:

During feedback inhibition, which of the following structural part of enzyme is involved?

_______ is involved in lipid synthesis/metabolism.

If another molecule, having a shape very similar to the enzymes substrate, binds to its active site, it would then ____ the enzyme’s function.

Myofibrils, within the muscle fibers, contain thick and thin filaments made up of _____ and ______ respectively:

Vertebrae of the neck are called:

Which vertebrae together are called pelvic vertebrae?

The correct option about spinal nerves is:

_________ is sometimes given by injection as an emergency treatment in cardiac arrest.

Which one of the following is a neurotransmitter?

Which hormone is chemically a steroid?

Lymph nodes are not present:

Which brain portion is responsible for controlling body coordination?

The estrogen hormone secretion during the oogenesis is stimulated by:

In human males, inhibin hormone is produced by:

In which stage of development, germ layers are formed?

An X to A ratio of ⅖ in drosophila produces:

The number of base pairs in a complete helical turn is/are:

Which of the following cells does not enter G0 phase?

Evolutionary relationships among species are reflected in their ________.

During gel electrophoresis, the gel used is:

Within the chromosomes, each chromatid contains ______ DNA molecule:

Modification in the organization of the basic pentadactyl limb structure found in vertebrates provides good evidence for the principle of:

Which one of the following is a genetic disorder in which abnormally thick mucus is produced in the lungs and other parts of the body?

Oxygen, released into the atmosphere, comes from:

3-Phosphoglycerate in the presence of ATP and reduced NADP (from the light-independent stage) is reduced to:

First infectious disease against which effective method of prevention developed was a _______:

_______ infection is caused by a viroid:

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

A combination of alpha interferon and ribavirin is used for the treatment of hepatitis:

Cysts are not resistant to ______ but spores are:

In which phase of bacterial growth, does division at an exponential rate occur?

Failure of separation of sister chromatids is called:

How does chemosynthesis differ from photosynthesis?

Analogous organs show:

Aspergillosis is a fungal infection and occurs only in _______:

Select a parasitic zooflagellate:

Many _______ expel a large amount of water by special structures called contractile vacuoles:

Chlorophyta is considered to be closest to plants but do not resemble plants in having:

Asexual spores of fungi are called:

Which characteristic led to the evolution of seed?

The term which is not related to the process of evolution of leaf is:

The most successful land adapting plants are:

Excretory system, consisting of protonephridia tubes, are present in phylum:

Which of the following enzymes is raised in rickets?

Which statement is true about electron affinity?

The bond, which is based on attractive forces between oppositely charged ions, is:

Which statement is incorrect regarding a chemical bond?

The carbonates of alkali metals are soluble in water except:

The nitrides of alkaline earth metals hydrolyse with water to form:

The flame colour of Ca in flame test is:

Which one of the following alkaline earth metal carbonates is thermally the most stable?

The binding energy of transition metal increases upto group:

Isomerism due to shifting of proton from one atom to another in a same molecule is known as:

Iso-Butyl alcohol has following carbon attached to hydroxyl group:

Oxidation of alcohol gives:

2-Butanone on oxidation with K₂Cr₂O₇ / H₂SO₄ forms:

Acetic anhydride is a product of acetic acid, as a result of the following reaction:

For a gaseous reaction, the increase in pressure will shift the equilibrium in a direction:

Acidic buffer consists of:

The pH of human blood is maintained between:

The buffer solution is not formed for:

In the reaction;H2 + CO2 <-> H2O + COThe decrease in the concentration of reactants and products cause the equilibrium to shift:

At equilibrium the concentration of reactants and product become:

The effect of temperature on the rate of a reaction is given by:

In a reversible reaction, catalyst lowers the activation energy of the:

0.5 molar solution NaOH contains:

The breakdown of a substance with current is:

Which of the following is a balanced redox equation?

Type of bonding in Sodium (Na) is:

Which of the following Halogens molecules has maximum bond energy?

Half atmospheric pressure is:

The value of S.T.P for 1 mole of any ideal gas is:

The expression PV=nRT represents the:

Pressure remaining constant, at which temperature volume of gas will become twice the volume at 0oC?

A graph between volume and temperature gives a straight line which cuts the temperature axis at:

Rate of effusion of a gas depends upon:

Upon which factor is vapor pressure not dependent:

If we take some water at 0oC and start heating it, we find that in the temperature range of 0oC to 4oC:

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

At the transition temperature of a crystalline solid, the substance exists:

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

When the number of moles of reactants and products are equal in reversibl reaction which parameter would not affect at fusion equilibrium?

By which of the following factors, equilibrium state is attained earlier?

Many elements have fractional atomic masses. This is because:

Mass of 1 molecule of O2 is:

The number of moles of CO2 which contain 8.0 g of oxygen are:

Identify the correct option with the same empirical formula for both compounds:

1 mole of any substance contains ____ particles:

What is the Avogadro’s number of particles in 0.25 moles of CO2?

The charge on one kg of electron is:

Which of the following fundamental particles have the same mass/kg?

The lightest positive rays obtained is from:

The amount of energy associated with quantum of radiation is directly proportional to:

X-rays are defined as:

Which of the following orbital wil be filled first than 4p?

Maximum number of electrons which can be placed in an orbital is

Mass of electron in a.m.u is:

Starting point of Kelvin scale is:

In motion of satellites, necessary centripetal force is provided by:

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

The product of frequency and time period is equal to:

Trough of a wave acts as:

In Doppler effect, if listener moves towards a stationary source then:

Refrigerator is an example of:

In a certain process, 400 J of heat energy is supplied to a system, and at the same time, 150 J of work is done by the system. The increase in internal energy of the system is _______.

The rapid escape of air from a burst tire is an example of:

The bicycle pump works based on:

Two positive point charges are placed 2m apart. The electric potential at midpoint due to these two charges will be _____:

Which of the following is the angle of projection of a projectile if its range is equal to its height?

The product of force and time is equal to:

The time rate of change of linear momentum of a body is equal to:

A 10 N force moves a body around a circular path of radius 50 cm. What is work done in completing one revolution?

A 3 kg stone falls from a 20m high platform. Find its falling speed at 10 m height.

The area under force-displacement graph gives us:

Kilowatt-hour is a unit of:

The food we eat in one day has about the same energy as:

One complete circle is equal to:

When the antinodes, in stationary waves, are passing through their equilibrium position, the energy is:

Why is the total mass of all individual protons and neutrons in a nucleus greater than the mass of the nucleus which they constitute?

Initial velocity of the object with which it goes out of the Earth’s gravitational field, is called:

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

When a vehicle moving in a straight path suddenly turns, the maximum force will be applied on:

The time period of a second pendulum on the surface of the moon becomes:

Red light is used in photographic dark room because of:

For gaining atomic spectra, an evacuated glass tube is filled with:

During the production of x-rays, the cathode and anode are enclosed inside an evacuated glass chamber and a high DC voltage of the order of:

Half-life of iodine-131 is 8 days. If 20mg is present initially. How much iodine is left behind after 2 half-lives?

4.5 x 109 years is the half-life of:

B_y increasing the area of the plates and decreasing the distance between them, the capacitance of a capacitor:

If we double the separation between two charges, then coulomb's force will become?

The power of an electric bulb is 100W. It is connected to 110V power supply. The resistance of electric bulb will be?

Terminal voltage Vi of the battery is greater than emf of the battery when:

The temperature coefficient of a normal conductor is positive because:

If length of the wire becomes two times to the original value and area becomes one half to its original value, then resistance of the wire becomes:

The unit of resistivity is:

1 kilowatt hour =

Which device is used to measure the potential difference between two points of a conductor in the laboratory?

Pick the correct option:

Which punctuation marks will be used to separate both the clauses in the following sentence?The gang was rounded up after the raid the leader escaped.

Fifteen minutes _____ allowed to each speaker.

Choose the correct passive voice:How did she defraud him of his savings?

Identify the error and choose the correct option:The rehearsal session started and we have little time to spar for other activities.

Fill in the blank with the appropriate option:Lions, like any other carnivores, _____ on meat.

Fill in the blank with appropriate option:The cattle ____ away the crops.

The word “LABYRINTH” means:

Pick the correct option:These are old those are new.

Ahmad carried out his duty according ______ instructions.

Identify the error and choose the correct option:The first space traveller was dennis tito from united states

Select the right sentence:

Fill in the blank:I can’t walk ______

Can you tell this fact ______ his face?

Choose the correct option:

They have painted their house purple. The sentence is an example of:

Select the correct option:He was killed _____ a robber _____ a hatchet.

Choose the correct option:

Find out the antonym of “Mumbled”: