Enzyme Technology Mock Test 10

10%

Question 1 of 10

1. SI unit of enzyme activity is _________

m/s

katal

mol

Newton

Question 1 of 10

Question 2 of 10

2. Which of the following is not involved in covalent catalysis?

Acylated, phosphorylated or glycosylated enzyme nucleophile as covalent intermediate

Bases which catalyze the reaction by accepting a proton

Electron rich nucleophilic function group of amino acid side chain

Electron deficient electrophilic portion of substrate

Question 2 of 10

Question 3 of 10

3. ____________ is a measure of the quantity of active enzyme present which depends on condition.

Turn over number

V_max

Enzyme activity

K_m

Question 3 of 10

Question 4 of 10

4. Which of the following is not true for acid base catalysis?

Specific hydroxide ion catalysis of reaction in water is an example of this type of catalysis

Bases increases the reaction rate by increasing the nucleophilic character of the attacking group

Bases catalyze the reaction by accepting a proton

To make reactants proximal to each other

Question 4 of 10

Question 5 of 10

5. Which of the following is a transaminase?

Chymotrypsin

Alanine transaminase

Proteinases

α-amylase

Question 5 of 10

Question 6 of 10

6. Which of the following is not a clinical application of angiotensin converting enzyme?

Prevents acidosis

Regulates blood volume

Regulates blood pressure

Gout

Question 6 of 10

Question 7 of 10

7. Enzymes that do not perform physiological functions are called as _________

isoenzymes

non-functional enzymes

biosensor

functional enzymes

Question 7 of 10

Question 8 of 10

8. Allopurinol is administered to treat gout.

False

True

Question 8 of 10

Question 9 of 10

9. Macromolecular crowding does alter the rate and equilibrium constant of enzyme reaction.

False

True

Question 9 of 10

Question 10 of 10

10. Which of these factors is true for enzymes while controlling assays?

Extreme high salt concentration can be tolerated

Increase in substrate concentration leads to increase in the rate of reaction

pH (2-4) is suitable for maximum activity

Macromolecular crowding does not alter the rates of the reaction

Question 10 of 10