UHS MDCAT 2015

In _ response, β-cells produce plasma cells that synthesize antibodies and release in blood plasma and tissue fluid.

Passive immunity is used against:

B-lymphocytes are named due to their relationship with:

In the light independent stage of photosynthesis, the CO2 combines with _ to form an unstable 6-carbon intermediate.

In glycolysis, glycerate-1,3-bisphosphate is converted into glycerate-3-phosphate by losing _ phosphate molecules.

Malate is oxidized by _ to oxaloacetate in Krebs’s C_ycle.

In electron transport chain, the electrons from NADH and FADH2 are passed to:

Carriers of the respiratory chain are located on:

In cystic fibrosis, liposomes-microscopic vesicles are sued which are coated with:

The DNA formed by the reverse transcription is called:

Bacterial cells take up recombinant plasmids when they are treated with:

Which one of the following is made up of radioactively labeled nucleotides?

A technique in transgenic animals in which the desired gene is inserted into the eggs of the animal is called:

O_zone is a layer of atmosphere extending from _ km above earth and absorbs ultraviolet radiations.

Light rays from the sun are absorbed by CO2 and re-radiate as _ radiations.

The gases which are produced by burning of fossils fuels and are responsible for acid rain are:

During successions, the first organisms that develop on bare rock are:

Trophic level of a herbivore in given food-web is:

During maternal mitosis, nondisjunction of autosomal chromosome pair results in the formation of an egg having 24 chromosomes in:

T_ypical symptoms like enlarged breasts and small testis in male are attributed to:

Fluid mosaic model of plasma membrane states that protein molecules float in a fluid-like _ layer.

How many triplets of microtubules are present in centriole?

Turner’s syndrome is characterized by having:

Which one of the following cell structures is involved in the synthesis of lipids?

Monosaccharides are major components of:

Blood group antigen contains:

M_yosin is a _ type of protein.

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

Number of base pairs in one turn of DNA is:

The lymph vessel of villi is called:

Right atrium is separated from right ventricle by:

The flaps of tricuspid valves are attached to muscular extensions of right ventricle known as:

One complete heartbeat consists of one systole and one diastole and lasts for about:

The heartbeat cycle starts when electric impulses are generated from:

About 70-85% CO2 in blood is carried:

Those nephrons which are present along the border of the cortex and medulla are called:

When water is in short supply, increased water retention occurs through the:

In nephrons, counter-current multiplier occurs at:

Ascending loop of Henle does not allow outflow of:

A larger quantity of dilute urine is produced in diabetes insipidus. This disease is due to the deficiency of:

Water and sodium ions are reabsorbed in:

Neurotransmitter secreted at synapse outside the central nervous system is:

Conduction of action potentials from one node of Ranvier to another in myelinated neurons is through:

In the following diagram of action potential in a neuron, ‘x’ depicts:

In human testis, which structure is responsible for carrying sperm from inside the testis?

In which part of female reproductive system fertilization takes place?

In females, FSH stimulates the ovary to produce:

Syphilis, sexually transmitted disease is caused by:

In which phase of the human female menstrual cycle, endometrium prepares for the implantation of embryo?

The total number of cervical and thoracic vertebrae in human vertebral column is:

A sarcomere is the region of a myofibril between two successive:

The sarcolemma of muscle fibre folds inwards and forms a system of tubes which runs through the sarcoplasm called:

According to sliding filament theory, when muscle fibers are stimulated by the nervous system, which of the following changes occurs?

If lactic acid builds up in thigh muscles, it causes muscle tiredness and pain. This condition is called:

Thyroxine deficiency in adults’ results in a condition called:

Alpha cells of pancreas release a hormone known as:

X-linked recessive trait is:

Human skin color is a good example of a?

From an evolutionary point of view, which respiratory protein is common in many organisms?

Number of pairs of autosomes in humans in:

ABO blood system is an example of:

Which molecular structure of enzyme is essential for activity of enzyme?

Which one of the following edible products is widely pasteurized?

Ribosomes are tiny organisms, which are involved in the synthesis of:

Which organelle is bounded by two membranes?

At the beginning of nuclear division, the number of microtubule triplets in two pairs of centrioles that migrate to opposite poles are:

The disease in which an individual has extra sex chromosome (44 + XXY) is known as:

Over-secretion of cortical hormone causes a disease called:

Ejection of milk from mammary glands is under the control of which one of the following hormones?

Granulocytes are:

Response of body against the transplanted organ is:

Some enzymes require helper which is non-protein part for its efficient functioning that is called:

Pepsin, protein digesting enzymes, sets best pH:

Which one of the following is an example of a competitive inhibitor?

HIV is classified as:

Cyanobacteria are:

During unfavourable conditions, certain bacteria produces:

In rhizopus, zygote forms temporary, dormant, thick-walled resistant structure called:

_ is a triploblastic organism.

In arthropods, the body cavity is in the form of:

_ is a good example of polymorphism.

Name common gut roundworm parasites of humans and pigs.

_ is also called liver fluke.

O_xyntic cells in stomach produces:

The hormone which inhibits the secretion of pancreatic juice is:

Trypsinogen is activated to trypsin by:

The emulsification of fats is the role of:

The specific substances (metabolite) that fits on the enzyme surface and is converted to products is called

‘K_a’ values of a few organic acids are given. The order of acid strength is:

An organic acid ‘z’ reacts separately with sodium bicarbonate, sodium hydroxide and sodium carbonate. Which one of the following represent the structure of ‘z’?

Carboxylic acids are rather hard to reduce, which powerful reducing agent can be used to convert them to the corresponding primary alcohol:

This structure is:

Which one of the following amino acids is basic in nature?

Select the correct Zwitter ionic structures of an amino acid:

How many moles of sodium are present in 0.1 g of sodium?

The structural formula for alanine is:

With the help of spectral data given, calculate the mass of Neon and encircle the best option. (Percentage of , and are 90.92%, 0.26% and 8.82% respectively).

Which one of the following pairs has the same electronic configuration as possessed by Neon ?

If the volume of a gas collected at a temperature of 600 °C and pressure of 1.05 × 10⁵ Nm^-2 is 60 dm³, what would be the volume of gas at STP (P=1.01 × 10⁵ Nm^-2, T = 273 K)?

There are four orbitals s, p, d and f. Which order is correct with respect to the increasing energy of the orbitals?

Which graph represents Boyle’s law?

Which one of the following hydrogen bonds is stronger than others?

The half-life of N₂O₅ at 0°C is 24 minutes. How long will it take for a sample of N₂O₅ to decay to 25% of its original concentration?

When the change in concentration is 6 x 10^-4 mol dm^-3 and time for that change is 10 seconds, the rate of reaction will be:

Which one of the following will have the smallest radius?

On the basis of the oxidising power of halogens, which reaction is possible?

[Ti(H₂O)₆]³⁺ transmits:

Electronic configuration of Gold is:

About 80% of ammonia is used for the production of:

Urea is the most widely used nitrogen fertilizer in Pakistan. Its composition is:

During the manufacture of nitric acid, nitric oxide is oxidized to nitrogen dioxide.

This reaction is given as: 2NO_(g) + O_2(g) ⇌ 2NO_2(g) ΔH = -114 kJ/mol

According to Le Chatelier’s Principle;

What is the percentage of nitrogen in NH₄NO₃?

The structural formula of 2,3,4 trimethylpentane is:

Which one of the following is a powerful electrophile used to attack on the electrons of a benzene ring?

Order of reactivity of alkenes with hydrogen halide is:

The given three hydrocarbons are:

The IUPAC name of the given compound is:

Which one of the following was used as one of the earliest antiseptic and disinfectants?

Which one of the following is NOT able to denature the ethanol?

In the below reaction, the configuration of product is:

How will you distinguish between methanol and ethanol?

To produce absolute alcohol (100%) from rectified spirit (95.6% alcohol), the remaining 4.4% water must be removed by a drying agent such as

Both aldehydes and ketones are planar to the neighborhoods of the carbonyl (C=O) group. Which one of the following bonds is distorted towards the oxygen atoms?

In the following structure, which one is an α-carbon atom?

Hemoglobin is a:

Which one of the following polymer is polystyrene?

Out of these, which nitrogen base is NOT present in DNA?

Which one of the following is an example of a co-polymer?

The biggest source of acid rain is the oxide of:

Burning of which one of the following waste is considered as useful industrial fuel or to produce electricity:

Which of the following is the correct dot and cross diagram of bonding between two chlorine atoms?

The equation that represents standard enthalpy of atomization of hydrogen is:

Standard enthalpy of combustion of graphite at 25 °C is –393.51 kJ mol^-1 and that of diamond is –395.41 kJ mol^-1. The enthalpy change for graphite is:

10.0 grams of glucose are dissolved in water to make 100 cm³ of its solution, its molarity is:

Given solution contains 16.0 g of CH₃OH, 92.0 g of C₂H₅OH and 36 g of water. Which statement about mole fraction of the components is true?

Study the following facts:

Zn → Zn⁺² + 2e^- E_o = +0.76 V

Cu → Cu⁺² + 2e^- E_o = – 0.34 V

Keeping in mind the electrode potential, which one of the following reactions is feasible?

Which one of the following is the correct presentation for Ksp?

The weight of an electron is:

One method of creating an inverted population is known as ________ and consists of illuminating the laser material with light.

In population inversion (Ruby Laser) atoms can reside in the excited state for:

If electrons of charge ‘e’, with rest mass ‘m’, are accelerated through a potential difference ‘V’ and strike a metal target, then velocity of electrons is:

In X-ray tube, electrons after being accelerated through velocity ‘v’ strike the target, then the wavelength of emitted X-rays is:

In the reaction, 234Th92 → 234Y91 + 0e-1, the electron 0e-1 emits from the:

A certain radioactive nuclide of mass number ‘x’ decays by β-emission and α-emission to a second nuclide of mass number ‘t’. Which of the following correctly relates ‘x’ and ‘t’?

During the decay of radioactive isotopes 232X90 to a stable isotope, six α-particles and four β - particles are emitted, what is the atomic number ‘Z’ and mass number ‘A’ of the stable isotopes?

Cobalt 60 is used in medicine and is an intense source of:

In fluid flow, for the equation of continuity A1v1 = A2v2. If the velocity of the fluid at one end is doubled, then what will be the cross-sectional area at this end?

The value of least distance vision for a normal eye is:

The distance between two dark adjacent fringes is mathematically written as:

In Young’s Double Slit Experiment, slit separation x = 0.05 cm, the distance between screen and slit D = 200 cm, fringes separation x = 0.13 cm, then the wavelength ‘λ’ of light is:

In the normal adjustment of a compound microscope, the eyepiece is positioned so that the final image is formed at

When two slightly different frequency waves superimpose _ is formed.

A body is having weight 20 N, when the elevator is descended with a = 0.1ms^-2, then the value of tension ‘T’ is:

Sodium 24 has a half-life of 15 hours and it is used in medicine to estimate:

Mass flow per second of the fluid is given by:

The dimension of coefficient of viscosity is:

What should be the length of a simple pendulum whose period is 6.28 seconds at a place where g = 10 ms^-2?

What should be the ratio of kinetic energy to total energy for a simple harmonic oscillator?

An observer moves with velocity ‘vO’ towards a stationary source, then the number of waves received in one second is:

Strain energy in deformed energy is stored in the form of:

A wire of area of cross-section ‘A’ and original length ‘l’ is subjected to a load ‘L’. A second wire of the same material with an area is ‘2A’ and a length of ‘2l’ is subjected to the same load ‘L’. If the extension in the first wire is ‘X’ and the second wire is ‘Y’, find the ratio ‘X/Y’.

Two sample of gases ‘1’ and ‘2’ are taken at same temperature and pressure but the ratio of number of their volume is V₁:V₂ = 2:3. What is the ratio of the number of moles of the gas sample?

Root mean square velocity of a gas having pressure ‘P’ and density ‘ρ’ is given by:

When the rate of a gas changes without a change in temperature, the gas is said to haveundergone:

What is 273 K on the Celsius scale of temperature?

If heat ‘Q₁ is absorbed in temperature ‘T’ and heat ‘Q₂ is absorbed at temperature of the triple point of water, then the unknown temperature of the system (in K) is :

If the fundamental logic gates are connected as:

Which combinations of ten identical resistors each of 2 Ω gives rise to the resultant of 10.4 Ω?

If a resistor having resistance ‘R’ is cut into three equal parts, then the equivalent of parallel combination is:

A bar of length ‘L’ pivoted at ‘O’ is acted by a force ‘F’ at an angle ‘ϴ’ with vertical line. What is the moment of force?

The resistance of a piece of wire is 12 Ω. It is bent to form an equilateral triangle. What is the equivalent resistance between any two corners of the triangles?

Magnetic field strength is measured in:

Force on the current carrying conductor per unit length is given by:

In the case when the electrons lose all their kinetic energy (K.E.) in the first collision, the X-ray photon emitted has the following set of frequency and wavelength?

If ‘A’ is the fundamental dimension of ampere, then the dimension of magnetic field strength is:

The potential difference between the target and cathode of an X-ray tube is 20 kV and the current is 20 mA. What is the λmin of the emitted X-ray?

Which of the following spectra is most typical of the output of an X-ray tube?

Which of the following is the truth table for the logic gate:

In Wilson Cloud Chamber which of the following tracks represented β-particles?

In spite of all the torture, the police have failed to _ any confession from the thief.

It is the duty of a teacher to _ moral values in his students besides teaching.

Many of the houses in Murree have basic _.

Youngsters who indulge in love affairs are usually _ in worldly matters.

Identify the segment in the following sentence which contains the mistake that needs to be corrected. He picked up one or two magazines and after a hurried glance on the contents carefully replaced them.

Identify the segment in the following sentence which contains the mistake that needs to be corrected.His guests found it fun to watch him make tea – mixing carefully spoonful from different caddies

Identify the segment in the following sentence which contains the mistake that needs to be corrected.You have put your life in his hands many a times.

Identify the segment in the following sentence which contains the mistake that needs to be corrected.Chips, thinking it over a good many time, always added to himself that Kathie would have approved and also have been amused.

Identify the segment in the following sentence which contains the mistake that needs to be corrected.But the men ate their supper in good appetites.

Identify the segment in the following sentence which contains the mistake that needs to be corrected.A common sense of failure is a mistaken ambition of the boys of the part of his parents.

Choose the correct sentence from the following:

Choose the correct sentence from the following

Select the nearest correct meaning of the given word:

EMPATHY

Select the nearest correct meaning of the given word:

FELICITY

Select the nearest correct meaning of the given word:

UNCANNY

Select the nearest correct meaning of the given word:

VIRULENT

Select the nearest correct meaning of the given word:

RAPT

Select the nearest correct meaning of the given word:

PEDAGOGY

Select the nearest correct meaning of the given word:

INDICTMENT

Select the nearest correct meaning of the given word:

MITIGATION

Select the nearest correct meaning of the given word:

CONCERTED

Select the nearest correct meaning of the given word:

ARCANE

Without a doubt, may he get first position!

Should I call or email you?

God showers his blessings.

Mister, can you spare us for a while?

Wish you a happy journey together.

Please stop!