SZABMU 2023 Past Paper

Non protein but inorganic detachable co-factor is called:

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

Enzymes work by lowering the:

The frequency of a mutant gene in a population would be likely to be increased if:

Which statement is not correct for the Darwin's theory of natural selection?

A general formula is derived by one of the following scientist for calculating the frequencies of alleles and genotypes in population at equilibrium:

When humans purposefully apply selection pressure to populations, the process is known as:

Which may NOT be a possible action of interferons?

Which Proteolytic enzyme is NOT secreted in inactive form?

In human heart, the left atrium receives:

Choose the correct pathway for the flow of blood:

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

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

The pathways of water transport in which water moves through plasmodesmata is:

In which phase of bacterial growth, they divide at exponential rate:

The unique macro-molecule in the bacterial cell wall is:

Function of pilus in bacteria is to:

Which of the following is absent from membrane of prokaryotes?

Which of the following is NOT the function of lysosomes?

Peripheral parts of cell are often like a:

The membrane separating the vacuole from cytoplasm is called:

Which part of plasma membrane controls the fluidity of the membrane:

The junction between the axon ending of a neuron and the dendrites of another neuron is called:

Which body function is controlled through positive feed-back mechanism?

Hormone released during child birth and in nursing women is:

During non-conducting state, the neuron membrane is permeable to efflux of:

GABA is an example of:

What is the fate of neurotransmitters after provoking impulse in postsynaptic membrane?

Negative feedback mechanism is the characteristics of which class?

Which of the following is true about Amoebae?

Select an anamnoites from the following:

Multicellular, heterotrophic nutrition, cell walls are never present in their cells, which kingdom do these organisms belong to?

Select a regulatory enzyme:

Many enzymes are secreted in inactive form to protect:

Mesosomes are the invagination of which bacterial cell structure?

Follicle Stimulating hormones (FSH) is secreted by:

Which is NOT a function of testosterone?

A condition in which a joint becomes swollen painful and immoveable is called:

Which feature is possessed by smooth muscles?

Mature bone cells are called:

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

It is an event that occurs during meiosis-l, when chromatids of two chromosomes break and rejoin so that a part of one chromatid swaps places with the same part of the other:

A change in the structure of a DNA molecule, producing a different allele of a gene, is a:

Which of the following example of human inheritance is explained by multiple alleles on an autosomal chromosome?

Phenotype is:

When a haemophilic carrier woman marries a haemophilic man, who among her offspring's may be affected?

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

Which of the following is 'NOT RELATED' to enveloped virus?

Choose the organism which requires a single cellular gene to encode the protein making up the organism:

is transmitted through infected blood and hypodermic syringes:

infection is caused by a viroid:

The final acceptor of both electrons & protons during light reactions of photosynthesis is:

The only copper containing protein involved during light reactions of photosynthesis is:

The end product of glycolysis in anaerobic respiration is:

End product of Calvin cycle is:

Second most abundant bio element in human body is:

The basic structural framework of all types of membranes are:

Three hydrophobic fatty acid tails and a glycerol molecule join to form a:

The sugar which is part of ribonucleic acid is:

Which of the following process involve in decomposition of protein into Amino acids?

Select the protein providing support for the connective tissues:

Fibrous proteins 'DO NOT' take part in:

Outer membrane of mitochondria and chloroplast resembles as both are:

In mitochondria ATP synthase is located on its:

Which of the following is absent from membrane of prokaryotes?

What is the primary function of the rough endoplasmic reticulum?

Which cellular structure is primarily responsible for generating ATP?

During menstrual cycle, after the female gamete is released from the ovary at ovulation, the ruptured follicle becomes the:

A metal reacts vigorously with cold water melting in to a ball of molten metal moves across the surface of water giving off Hydrogen gas and burns with yellowish golden flame. What could be the identity of this metal?

Among alkali metals which element reacts slowly with H2O?

Which element has smaller shielding effect among the following?

In transition elements number of unpaired electrons increase upto group number:

The binding energy of transitional elements weakens progressively upto group:

Metamers differ from each other due to:

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

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

Benzene is prepared in the laboratory from sodium benzoate in the presence of:

Which of the following will not give substitution reaction?

If both double and triple bonds are present then ending given to the root is:

Which compound is least reactive?

The correct order of reactivity of hydrocarbons is:

The function of NaOH in Aldol condensation & Cannizzaro's reaction respectively is:

Which of the following is not true for increase in synthesis of ammonia by Haber's process? (N2 + 3H2 <-> 2NH3, ΔH = -92.5)

What is not true about the Le Chatelier's principle?

For a gaseous phase reaction, when number of moles of reactants and products are equal:

The rate constant 'k' in the rate equation is the rate of reaction when concentration of each of the reactant is:

The rate of reaction:

For exothermic reactions ΔH is written as:

Which of the following information we obtain from the Lattice energy?

In the reaction, Cr2O7⁻² + 14 H⁺ -> 2 Cr⁺³ + 7H2O. How many electrons are gained or lost by chromium atom?

The oxidation number of oxygen in Na2O2 is:

Which of the following will have positive electron affinity?

Which of the following molecule has sp² hybridization?

Which of the following has small size?

The melting point of sulphur is higher than that of phosphorous because:

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

50% inversion of configuration and 50% retention of configuration observed is characteristics of mechanism:

The order of reactivity of alcohol when O-H bond breaks is:

The following functional group is the result oxidation of alcohol:

The relative acidic strength of phenol, water, alcohol & carboxylic acid is:

Aldehydes cannot be easily oxidized by:

Aldehydes do not give which identification test:

The hydrate percentage is maximum for:

When carboxylic acids are heated with alcohol in the presence of concem H2SO4 the conversion of function group takes place from:

Thionyl chloride reacts with acetic acid resulting in transformation of Carboxylic group to:

Reactivity of carboxyl group is due to presence of:

The two functional groups present in all amino acids are:

Enzyme is a natural substance that:

Number of H2O molecules in 10 g of ice are:

The efficiency of chemical reaction can be expressed as:

1 mol of any substance contains ___ particles:

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

If value of azimuthal quantum number is 1 then value of m will range from:

The dumbbell like orbitals can move in how many directions?

The relationship between quantum number n and l is:

10 pascal is equal to:

Intermolecular forces between molecules of ideal gas are:

The real gases show deviation from ideal behaviour at:

Which of the following has the lowest vapour pressure at 20°C?

The force of attraction among H2 molecules in solid H2 are:

Which of the following molecules are soft and have weak intermolecular forces?

Which of the following solids have strong metallic bond?

The relative permittivity of air (1 atm) is:

Equivalent capacitance is less than least value of capacitance in a combination in:

The magnitude of the force between two point charges is directly proportional to:

When dielectric is placed between the plates of a capacitor then capacitance will:

A charge of 90 C passes through a wire for 30 seconds. Then the current in the wire will be:

The magnitude of the current in metals is proportional to the applied voltage as long as temperature of conductor is kept constant. It is statement of:

When length of copper wire is doubled then resistivity becomes:

The resistance of semi-conductor with rise in temperature:

A heating coil has a resistance of 10 ohm. It is designed to operate on 20V. What electric energy is supplied to heater in 10s?

The unit of resistivity is:

The unit of magnetic flux is:

Magnetic flux is the dot product of:

The dimension of magnetic field is same as:

At what angle the curved path should be banked if a car is moving with a speed of 12 m/s at a radius 36m?

The rate of radioactive decay is inversely proportional to the:

If a body of mass 'm' is moved in a closed loop by a conservative force, the work done on the body is:

A wave generator produces 500 pulses in 50s. Its frequency will be:

Amplitude in the given figure is given as: (Given graph peaks at 1m)

Which is the correct 'ascending order' in which the following photons are arranged according to their energy?

The Speed of sound in air is 332 ms⁻¹ at 0°C. What will be its value at 10°C?

The number of revolutions per second of a body is known as:

Which of the following factors does not affect the speed of sound in air?

Time period of a vibrating body is independent of:

The relation between Cp and Cv is:

The equation of 1st Law of thermodynamics is:

The thermodynamics process during which the pressure is kept constant is called:

A one micro farad capacitor of a TV is subjected to 4000 V potential difference. The energy stored in capacitor is:

A particle carrying a charge 2 e falls through a P.D of 3 V. The energy acquired by it will be:

Due to polarization process of dielectric, the electric intensity:

The phenomenon in which a changing current in one coil induces an emf in another coil is:

The induced current will flow in such a direction so as to oppose the cause that produces it. It is the statement of:

The transformer depends on the use of:

The domestic electricity supply in Pakistan has a frequency of:

Transformer works on the principle of:

The conversion of A.C into D.C is called rectification and circuit is called rectifier. Which component of electronics acts as a rectifier?

The wavelength associated with an electron is of the order of:

Red light is used in photographic dark room because of:

Which photons carries the most energy?

Which X-ray photon will have longest wavelength?

Which of following series lies in infra-red region?

The unit of radio activity is curie which is equal to:

Skin burn, loss of hair, drop in white blood cell and induction of cancer are example of ___ of radiation:

The car is speeding up along negative y axis then acceleration will be along:

Momentum is product of mass and velocity, then momentum and velocity are:

Which of the pair of two projectiles projected at different angles have same ranges?

The slope of velocity-time graph gives us:

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

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

If a body of mass 'm' is accelerated on a smooth horizontal surface 'S' by a force 'F', the work done on the body is:

One megawatt hour is equal to:

A motor boat is moving with velocity 4 ms⁻¹. The net force acting on it is 4000 N. What will be the power of the engine of boat?

In angular motion, in one rotation there are:

If a stone of mass 1 Kg is whirled in a horizontal circle (radius = 1 m) with velocity 1 m/s, then the period is:

The relation between linear and angular acceleration is:

The word 'RELUCTANT' means:

The SYNONYM of 'Apparel' is:

The ANTONYM of 'Endeavour' is:

What is the ANTONYM of 'zealous'?

Fill in the blank with appropriate article as required. It is ___ honor for me to address you.

Fill in the blank with appropriate preposition. He was sitting next ___ her.

Fill in the blank with appropriate preposition. Each article was sold ___ over a pound.

What does the word 'ANCESTOR' mean?

The word 'BASHFUL' means:

Pick the correct option:

Pick the correct option:

Pick the correct option:

Choose the correct sentence:

The Town ___ its appearance completely since 1980.

By next March, we ___ here for four years.

Fill in the blank with appropriate option: The students, accompanied by the teacher ___ entering the museum.

Fill in the blank with appropriate option: None of us ___ beyond a mile.

Fill in the blank with appropriate option: [They] ___ before 10 p.m.

Choose the correct spelling:

Statements: I. A ball is a sphere. II. All spheres are round. III. Some round things are mesmerizing. Conclusions: I. [Assumed: A ball is round] II. All round things are spheres. III. Some mesmerizing things are spheres.

I. There is sharp decline in the production of oil seeds this year.

II. The Government has decided to increase the import quantum of edible oil.

Statement: Employees are arriving to work more than 5 minutes late every day. Courses of Action: I. Impose a strict penalty of half a day's pay every time someone is late. II. Apply a 15 minutes' buffer. Anyone who is late more than 2 times a month after this buffer period gets docked one day's pay.

Read the following statement. Pakistan is rich in wildlife and culture. It is home to many sorts of wildlife, from the Ibex to the Indus River Dolphin; and people from most countries in the world have made their home here. Which conclusion logically follows?