Correct Answer:- Option-C

Question18:-An enzyme with nomenclature EC 2.7.3.2 belongs to class.

A:-Transferase

B:-Ligase

C:-lsomerase

D:-Lyase

Correct Answer:- Option-A

Question19:-The sets of enzymes that are markers of myocardial infarction

A:-GOT, GPT, CK

B:-GOT, LDH, GPT
C:-GPT, LDH, CK

D:-GOT, CK, LDH

Correct Answer:- Option-D

Question20:-Which of the following statement is correct?

A:-In Competitive inhibition Vmax is unchanged, Km decreases
B:-In Competitive inhibition Vmax is unchanged, Km increases
C:-In non-competitive inhibition Vmax is unchanged, Km decreases
D:-In non-competitive inhibition Vmax is unchanged, Km increases
Correct Answer:- Option-B

Question21:-Bell shaped curve is obtained for enzyme velocity with

A:-Increasing temperature and increasing enzyme concentration
B:-Increasing temperature and increasing pH

C:-Increasing substrate concentrate and enzyme concentration
D:-Increasing pH and increasing enzyme concentration

Correct Answer:- Option-B

Question22:-Select the false statement regarding active site of enzyme.

A:-Active site possesses a substrate binding site and a catalytic site
B:-Active sites are regarded as clefts or crevices

C:-Active site is rigid in structure and shape

D:-Active sites frequency has the amino acid serine

Correct Answer:- Option-C

Question23:-Km value is unchanged while Vmax is lowered in

A:-Competitive inhibition
B:-Non-competitive inhibition
C:-Uncompetitive inhibition

D:-Irreversible inhibition