Biochemistry Questions and Answers Part-13

1. Sulphur containing amino acid is
a) Methionine
b) Leucine
c) Valine
d) Asparagine

Answer: a

2. An example of sulphur containing amino acid is
a) 2-Amino-3-mercaptopropanoic acid
b) 2-Amino-3-methylbutanoic acid
c) 2-Amino-3-hydroxypropanoic acid
d) Amino acetic acid

Answer: a

3. All the following are sulphur containing amino acids found in proteins except
a) Cysteine
b) Cystine
c) Methionine
d) Threonine

Answer: d

4. An aromatic amino acid is
a) Lysine
b) Tyrosine
c) Taurine
d) Arginine

Answer: b

5. The functions of plasma albumin are
a) Osmosis
b) Transport
c) Immunity
d) Both (A) and (B)

Answer: a

6. Amino acid with side chain containing basic groups is
a) 2-Amino 5-guanidovaleric acid
b) 2-Pyrrolidine carboxylic acid
c) 2-Amino 3-mercaptopropanoic acid
d) 2-Amino propanoic acid

Answer: a

7. An example of α-amino acid not present in proteins but essential in mammalian metabolism is
a) 3-Amino 3-hydroxypropanoic acid
b) 2-Amino 3-hydroxybutanoic acid
c) 2-Amino 4-mercaptobutanoic acid
d) 2-Amino 3-mercaptopropanoic acid

Answer: c

8. An essential amino acid in man is
a) Aspartate
b) Tyrosine
c) Methionine
d) Serine

Answer: c

9. Non essential amino acids
a) Are not components of tissue proteins
b) May be synthesized in the body from essential amino acids
c) Have no role in the metabolism
d) May be synthesized in the body in diseased states

Answer: b

10. Which one of the following is semi-essential amino acid for humans?
a) Valine
b) Arginine
c) Lysine
d) Tyrosine

Answer: b