List of top Biochemistry Questions asked in Common University Entrance Test

What is the rate of mortality in acute liver failure?

Liver failure is commonly caused by which condition?

A patient presents with stunted growth, web-like neck, and an underdeveloped sexual characteristic. What is your diagnosis?

A decrease in the concentration of serum albumin leads to which of the following condition?

In kidneys the glomerular filtration rate (GFR) depends upon:
(A) The difference in hydrostatic and oncotic pressures between the glomerular capillaries and the lumen of the nephron.
(B) The nature of glomerular basement membrane.
(C) Total available filtration area.
(D) Relative concentration of ions.
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A human condition of acid-base disturbance with high H⁺ ions in the blood is called:

Hyponatremia is a condition where the concentration of the following ion decreases below normal level in plasma:

A sequence in an mRNA that is required for binding bacterial ribosomes is called:

The step in an enzymatic reaction of a pathway that needs greatest amount of activation energy is called:

A group of contiguous nucleotide codons in DNA molecule that does not include a termination codon is called:

A mutation in the GLA (alpha-galactosidase A) gene leads to which of the following conditions?

Which one of the following is a disease caused by defects in enzymes necessary for heme biosynthesis?

A genetic mutation that limits the production of glucocerebrosidase, an enzyme responsible for breaking down fats, leads to which of the following diseases?

When wool sweaters are washed in hot water, they shrink. In contrast, when silk clothes are washed, they do not shrink under the same conditions:
(A) The β-woolen polypeptide chains are converted to the native α-helical conformation.
(B) The structure of silk β-sheets is more stable than that of wool.
(C) The β-woolen polypeptide chains remain in their native conformation.
(D) The structure of silk β-sheets is less stable than that of the wool protein structure.
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When a protein has two or more polypeptide subunits, their folding arrangement is called:

The number of enzyme units per milligram of total protein is called:

Match List I with List II

List I	Protein Name	List II Molecular Weight (kDa)
A	β-galactosidase	(i) 14.4
B	Bovine Serum Albumin	(ii) 116.25
C	Ovalbumin	(iii) 45
D	Lysozyme	(iv) 66.2

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One calorie (cal) equals to how many joules (J)?

The energy derived from noncovalent interactions between enzyme and substrate is called:

Which one of the following i.e., number of molecules per gram molecular weight, represents the Avogadro’s number (N)?

The catabolic lysosomal degradation of cellular proteins is called:

Which of the following is used in protein classification?

A researcher engineers a lac operon on a plasmid inactivating all parts of the lac operator and the lac promoter, replacing them with the binding site for the LexA repressor and promoter regulated by LexA. The plasmid is introduced into E.coli cells that have a lac operon with an inactive lacZ gene. Under what conditions will these transformed cells produce β-galactosidase?

Read the following statements carefully:
(A) DNA ligases are enzymes that create a phosphodiester bond between DNA fragments.
(B) A protein containing one or more prosthetic groups is called a conjugated protein.,
(C) A type of enzyme inhibition reversed by increasing the substrate concentration is called competitive inhibition.
(D) Two stereoisomers of a given sugar that differ only in the configuration about carbonyl
carbon atom are called anomers.
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Which of the following statements are correct?(A) DNA microarray is a collection of DNA sequences immobilized on a solid surface that can be probed by hybridization.
(B) Differential centrifugation describes the separation of cell organelles by different rates of sedimentation.
(C) Amino acids that cannot be synthesized by humans but are synthesized by microbes are called essential amino acids.
(D) Equilibrium constant is specific for each chemical reaction.
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