List of top Biochemistry Questions on Enzymes

Which of the following enzyme is involved in the protection of cells from reactive oxygen species?

You have purified an enzyme using a series of chromatographic methods. It was observed that a 10 \(\mu\)g mL^-1 of this purified enzyme converted 10 mM substrate per hour at 25\(^{\circ}\)C and pH 7. Its specific activity is IU \(\mu\)g^-1. (rounded off to three decimal places)

Enzyme asparaginse is obtained from:

Deficiency of____ enzyme is found in Hers’ disease.

Match List I with List II:

List I Dissolution apparatus		List II Name
A.	Type I	I.	Reciprocating holder
B.	Type 5	II.	Paddled overdisk
C.	USP App 6	III.	Basket type
D.	USP App 7	IV.	Cylinder apparatus

Choose the correct answer from the options given below

When exposed to carbon monoxide, the base pigment of Cytochrome P enzymes absorb light at:

A child presents with erythematous scaly patches in the perioral region, mucosal ulcers, and impaired epithelial wound healing. The most likely mineral deficiency associated with this condition is?

Which of the following equilibrium suggests noncompetitive inhibition of enzyme E for conversion of substrate S to product P with inhibitor I?

The role of glutathione in tissues includes all except:-

The Michaehis-Menten hypothesis

Match the following enzymes/protein with specific functions in DNA replication

(1)	Helicases	(P)	Processive unwinding of DNA
(2)	DNA Primses	(Q)	Seals the single strand
(3)	DNA ligases	(R)	Relieves torsional strain
(4)	Topiosomerases	(S)	Initates synthesis of RNA Primers

Thiamine deficiency causes decreased energy production because

All of the following is resistant to both true and pseudo cholinesterase enzymes

Match the following biochemical transformations with coenzymes involved

(i) α-Ketoglutarate to glutamic acid	Tetrahydrofalate
(ii) Uridine to thymidine.	NADH
(iii) Pyruvid acid to acetyl coenzyme A	Thiamine pyrophosphate
	Pyridoxamine

All are potent 3A4 inhibitors EXCEPT____

The enzyme superoxide dismutase (SOD) converts

Which one of the following amino acid residues is specifically recognized by chymotrypsin during peptide bond cleavage

Menkes disease is associated with which enzyme deficiency.

Glutamine is Increase in CSF, blood and urine, this is due to deficiency of

Alpha one anti trypsin works by:

Conversion of Norepinephrine to epinephrine is mainly by?