Biochemistry MCQs Test 03 Online for Preparation

1. Which of the following amino acid has buffering capacity ?

A. a) Tryptophan

B. b) cysteine

C. c) histidine

D. d) arginine

2. Which of the following is an α amino acid ?

A. a) serene

B. b) threonine

C. c) valine

D. d) proline

3. The naturally occurring form of amino acid in proteins ?

A. a) L-amino acids only

B. b) D-amino acids only

C. c) both L and D amino acids

D. d) none of these

4. Sulphur containing amino acids are ?

A. a) Cysteine and methionine

B. b) Methionine and threonine

C. c) Cysteine and threonine

D. d) Cysteine and serine

5. Aromatic amino acids include ?

A. a) Phenylalanine, tyrosine and tryptophan

B. b) Phenylalanine, serine and tryptophan

C. c) Threonine, tyrosine and tryptophan

D. d) Asparagine, tyrosine and tryptophan

6. Positively charged basic amino acids are ?

A. a) Lysine and arginine

B. b) Lysine and asparagine

C. c) Glutamine and arginine

D. d) Lysine and glutamine

7. Acidic amino acids include ?

A. a) Arginine and glutamate

B. b) Aspartate and asparagine

C. c) Aspartate and lysine

D. d) Aspartate and glutamate

8. Amino acids with hydroxyl groups are ?

A. a) serine and alanine

B. b) Alanine and valine

C. c) serine and threonine

D. d) Valine and isoleucine

9. The 21st amino acid is ?

A. a) hydroxy lysine

B. b) hydroxyl proline

C. c) selenocysteine

D. d) citrulline

10. Absorbance at 280nm exhibited by protein is due to ?

A. a) aliphatic amino acids

B. b) all amino acids

C. c) Non-polar amino acids

D. d) aromatic amino acids

Biochemistry MCQs Test 03 Online for Preparation

Leave a Reply Cancel reply