National University of Medical Sciences
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Which organelle would be more abundant in the se-cretory cell than the non-secretory cell:
Explanation
Secretory cells produce and package large amounts of materials for export, so the Golgi complex (which modifies, sorts and packages secretory products) is more abundant. Lysosomes, vacuoles and centrioles do not perform the specialized packaging/secretory role of the Golgi.
The structure which disappeared during cell division is:
Explanation
During mitosis the nuclear envelope breaks down and the nucleus is not visible as an intact structure, so the nucleus is described as 'disappearing'. Vacuoles, lysosomes and ER remain as cellular components and do not vanish in the same way.
The enzyme ATP synthase is located on the mem-brane of the organelle:
Explanation
ATP synthase is located in the inner membrane of mitochondria where it produces ATP during oxidative phosphorylation. It is not a feature of the nuclear membrane, lysosomes or vacuoles.
------ are spherical sacs surrounded by a single membrane and containing hydrolytic enzymes:
Explanation
Lysosomes are membrane-bound spherical vesicles containing hydrolytic (digestive) enzymes. Mitochondria and chloroplasts have different internal structures and Golgi bodies are flattened sacs involved in processing and packaging, not hydrolytic digestion.
Except during nuclear division, the nucleus has the chromosome in a loosely coiled state known as:
Explanation
Chromosomes exist as loosely coiled chromatin when the cell is not dividing, allowing transcription and replication. 'Genes' and 'DNA' are related terms but the structural state is specifically called chromatin; ribosomes are unrelated organelles.
Within the nucleus ------ are made by the nucleolus:
Explanation
The nucleolus is the site of ribosomal RNA synthesis and ribosome assembly, so ribosomes (or rRNA and ribosomal subunits) are produced there. It does not synthesize mRNA, general proteins or enzymes directly.
Which of the following is correct for the cell wall:
Explanation
The cell wall (especially plant cell wall) is generally permeable to water and many solutes; it does not act as a selectively permeable membrane like the plasma membrane. 'Permeable' best matches the printed options.
Cell membrane also contain through which movement of materials take place by active and passive transport:
Explanation
The cell membrane contains channel/charge pores (channels and carrier proteins) through which substances move by active and passive transport. Lipids and carbohydrates are membrane components but do not themselves form transport pores; 'Corner' appears to be a misprint.
The part of plasma membrane controls the fluidity of the membrane:
Explanation
Lipids, particularly cholesterol and the fatty acid composition of phospholipids, control membrane fluidity. Glycoproteins and carrier proteins have other roles, while carbohydrates are usually surface markers.
A group of ribosomes attached to mRNA is known as a polysome and the attachment is controlled by:
Explanation
Magnesium ions (Mg2+) are important for ribosome stability and assembly, helping ribosomes attach to mRNA. Sodium, potassium and calcium are important ions but do not specifically control polysome attachment.
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An automatic, involuntary response to any change, external or internal is called:
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Resting membrane potential measures:
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Touch receptors are
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Which one is NOT a function of the large intestine:
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The following part is common in both the digestive system and respiratory systems of human beings
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Heartbeat is normally regulated by:
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The method which helps in developing immunity against bacteria is:
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During the menstrual cycle, after the female gamete is released from the ovary is ovulation, the remains of the follicle secrets:
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In the male reproductive system, the hormone involved in the regulation of the rate of spermatogenesis is called:
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Cervix is the part of:
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Which of the following is most abundant in human body:
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Which of the following is an example of a joint called suture:
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Which event does not occur during muscle contraction:
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Smooth muscles are long and spindle-shaped with nucleus ---- per cell:
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Blood group which is known as a universal donor is:
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Which one can be considered as living characteristic of a virus:
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A group of organisms with similar morphology and physiology, which can breed together to produce fertile offspring is called:
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oxygen is available, the complete breakdown of glucose produces ----- ATP molecules in prokaryotes:
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What are the products of light dependent reactions of photosynthesis?:
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During photosynthesis, CO2 works as:
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End product of Calvin cycle is:
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Which of the following molecule contains amino acid?:
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Hydrolysis is the breakdown of polymer into its monomers by the addition of:
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Which of the following is not a carbohydrate:
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Due to its high heat of vaporization water plays important role in living organism as:
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Which molecules do not contribute to the formation of biological membranes?
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Which of the following molecules would yield glucose and fructose on hydrolysis?
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The terminal ends of the chromosomes are called:
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The gap between neurons at a synapse is:
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The part of the brain which controls the body temperature in human beings is called:
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A long extension of a nerve cell is called:
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Which is a steroid hormone?
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The molecules responsible for conveying messages from one neuron to the next are called:
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Which enzyme works in alkaline pH?
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Considering enzyme action minimum temperature is the term used when:
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Which option is correct about non-competitive inhibition:
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Which type of enzyme would be most active in your gut after eating the loaf of bread?
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He presented the theory of "origin of species by means of natural selection":
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Which is not a mode of action of an antibody?
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Magnesium is an important nutrient in plants for the formation of:
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Which of the following parts of the respiratory system has no cartilage?
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Enzymatic portion of the gastric juices secreted by which mucosal cells?
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The horizontal distance travelled by wave during one complete cycle is called
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If the period of oscillation of man (M) suspended from a spring is 1s, then the period of 16M will be:
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Loudness of the sound is directly rotated to:
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The increase in the speed of sound in air for each degree rise above 0°C is:
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First law of thermodynamics is based on:
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The thermodynamic process during which the pressure is kept constant is called:
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Energy stored in a capacitor is given by:
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Electric field intensity is:
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Q.64 It stores electrical potential energy:
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Q.65 A 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:
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Q.66 The resistance of pure metal increases with:
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Q.67 The magnetic field inside the current carrying wire varies
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Q.68 Magnetic flux is maximum when Angle between magnetic field and vector area is:
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Q.69 Lenz's law is based on the law of conservation of:
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Q.70 In Fleming's right hand rule, the thumb indicates
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Q.71 Transformer works on the principle of:
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Q.72 A device that converts AC into DC is called:
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Q.73 The conversion of alternating current into direct current is called:
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Q.74 1 Gy is equal to:
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Q.75 A 32g radioactive element decays and remains 2g after 60 days. What is the half-life of radioactive element?
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Q.76 An elastic collision is the one in which:
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Q.77 The time rate of change of velocity is called:
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Q.78 In projectile motion, the rage of projectile will be maximum at an angle of:
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Q.79 Which of the following is NOT TRUE?
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Two buses moving at 100 km/h and 80 km/h respectively cross each other while moving in opposite direction. Velocity of one bus relative to other bus is:
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Which of the following pair of angles have same rang for a projectile?
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The angle of projection of a projectile for which its maximum height and horizontal range are equal is:
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The explosion of explosive material is application of:
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1hp is equal to:
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The product of force and velocity is equal to:
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One kilowatt-hour is equal to:
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The amount of work done in moving a body at certain point in a gravitational field to a position of zero potential such that the body is never accelerated is called:
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If the speed of a body is doubled, its kinetic energy becomes:
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An electric motor of power 2hp is installed in an industrial unit. Its power is:
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1 radian =
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The minimum required velocity to put a satellite into the orbit is called:
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A rotating wheel coincides 12 rev in 4s. find the average angular velocity in rad/sec:
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When an object experience circular motion, the direction of centripetal acceleration is:
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Crest of a wave acts as:
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The speed of sound in air does not depend on:
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Choose the correct option: He had no worries his pension was adequate and there was a little money saved up besides.
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Identify the errors and choose the correct option: There's mr. Hashim whom they say is the best portrait painter in the town
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A full description of car accidents ______ reported.
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Ahmad ______ me for a long time.
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He is appreciated for being ambidextrous. The underlined word means:
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He visited the ghettos for the first time. The underlined word means:
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My friend has a fine ______ of old stamps.
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Choose the correct option:
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The head master ______ to speak to you.
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Knowledge and wisdom _____ no time for connection.
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Each of three boys _____ to ride.
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Choose the correctly structured sentence.
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Identify the errors and choose the correct option. The english man thinks that he and his country are the best.
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Pick the word with correct spelling.
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Which of the following molecule is covalent in nature?
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Which of the following property increases down the group in alkali metals?
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The solubility of alkaline earth metal:
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Geometric isomerism is exhibited by:
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Benzene can be formed from phenol in which of the following reactions?
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Lucas test is used for the identification of:
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Phenol has following characteristics and physical properties:
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The identification test for Ketone is:
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Carboxylic acids are water soluble because they:
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Which of the following represents equation for ideal gas?
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How should the condition be changed to prevent the value of a given gas from expanding when its mass is increased?
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Which variable mentioned in ideal gas is assumed to be constant in other gas laws?
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Which of the following molecules will show a higher rate of evaporation?
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Specific heat of water is:
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Which of the following statement explains solubility of ionic substance in water?
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Nature of diamond as solid is:
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Which one of the following is as light as a feather and as strong as iron?
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The pH of human blood is:
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Proton number of 23Na11 is:
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One mole of ethanol and one mole of ethane have an equal:
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The 1' step involved in the determination of Empirical Formula of chemical compound is:
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The number of moles of CO2 which contains 16 g of oxygen is:
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Percentage composition of mass in CO2, is:
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Maximum electrons that can be placed in p subshell are:
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Apply n+l rule and calculate which of the following orbital has maximum energy?
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The mass of electron is:
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The shape of an orbital is determined by which quantum number?
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The electronic configuration for degenerate orbitals is explained by:
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Which term describes a solution in which dissolved solute is in equilibrium with undissolved solute?
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Rate of any reaction depends upon:
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What is "NOT TRUE" about rate of a reaction?
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Enthalpy change of combustion is exothermic because:
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One Calorie is equivalent to:
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Potential of Standard Hydrogen Electrode (SHE) is arbitrarily taken as:
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During electrolysis, reduction always occurs at:
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Type of hybridization of carbon in Ethene (H2C=CH2) is:
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Which of the following molecule is polar?
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Electron affinity decreases down the group because:
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