1. Inhibition of Succinic dehydrogenase enzyme by malonate is a classical example of:

(1).Competitive inhibition

(2). Enzyme activation

(3). Cofactor inhibition

(4). Feedback inhibition

2. Lectin, a small molecular weight organic compound found in living tissues, is an example of:

(1).Glycerides

(2). Carbohydrates

(3). Amino acids

(4). Phospolipids

3. The cofactor of the enzyme carboxypeptidase is:

(1).Flavin

(2). Haem

(3). Zinc

(4). Niacin

4. Match List I with List II:

Choose the correct answer from the options given below:

(1).A-II, B-III, C-IV, D-I

(2). A-III, B-IV, C-I, D-II

(3). A-IV, B-I, C-II, D-III

(4). A-I, B-II, C-III, D-IV

5. Match List I with List II:

Choose the correct answer from the options given below:

(1).A-II, B-IV, C-I, D-III

(2). A-IV, B-I, C-III, D-II

(3). A-IV, B-II, C-III, D-I

(4). A-III, B-II, C-I, D-IV

6. Regarding catalytic cycle of an enzyme action, select the correct sequential steps :
A. Substrate enzyme complex formation.
B. Free enzyme ready to bind with another substrate.
C. Release of products.
D. Chemical bonds of the substrate broken.
E. Substrate binding to active site.
Choose the correct answer from the options given below :

(1).B, A, C, D, E

(2). E, D, C, B, A

(3). E, A, D, C, B

(4). A, E, B, D, C

7. Match List I with List II.

Choose the option with all correct matches.

(1).A-II, B-III, C-I, D-IV

(2). A-III, B-IV, C-II, D-I

(3). A-III, B-II, C-IV, D-I

(4). A-III, B-II, C-I, D-IV

8. The protein portion of an enzyme is called :

(1).Prosthetic group

(2). Cofactor

(3). Coenzyme

(4). Apoenzyme

9. Which one of the following enzymes contains 'Haem' as the prosthetic group?

(1).Catalase

(2). RuBisCo

(3). Carbonic anhydrase

(4). Succinate dehydrogenase

10. Which of following organisms cannot fix nitrogen?
A. Azotobacter
B. Oscillatoria
C. Anabaena
D. Volvox
E. Nostoc
Choose the correct answer from the options given below:

(1).E only

(2). A only

(3). D only

(4). Bonly