Biochemistry

Question: Ascorbic acid acts as an
[A].

reducing agent

[B].

oxidizing agent

[C].

oxidizing and reducing agent both

[D].

none of the above

Answer: Option A

Explanation:

No answer description available for this question.

Question: Who discovered vitamin C (ascorbic acid)?
[A].

Paul Berg

[B].

Linus Pauling

[C].

Albert Szent-Gyorgyi

[D].

Kerry Mull is

Answer: Option C

Explanation:

No answer description available for this question.

Question: E.coli ACP has its molecular weight as around
[A].

9000

[B].

19000

[C].

39000

[D].

90,000

Answer: Option A

Explanation:

No answer description available for this question.

Question: Acyl carrier protein (ACP) plays an important role in the biosynthesis of
[A].

fatty acids

[B].

amino acids

[C].

sugars

[D].

carbohydrates

Answer: Option A

Explanation:

No answer description available for this question.

Question: In the co-enzyme B12the position occupied by a cyanide ion in vitamin B12 is bonded directly to the __________ of the ribose of adenosine.
[A].

adenine

[B].

5-6 dimethylbenzimidazole

[C].

hydroxycobalamin

[D].

cyanocobalamin

Answer: Option A

Explanation:

No answer description available for this question.

Question: An enzyme, L-folate reductase reduces folic acid to
[A].

hydrofolic acid

[B].

dihydrofolic acid

[C].

trihydrofolic acid

[D].

tetrahydrofolic acid

Answer: Option B

Explanation:

No answer description available for this question.

Question: A deficiency of thiamin produces the disease known as
[A].

beri-beri

[B].

scurvy

[C].

cataract

[D].

anemia

Answer: Option A

Explanation:

No answer description available for this question.

Question: Biotin occurs mainly in combined forms bound to protein through
[A].

ε-N-lysine moiety

[B].

ε-S-lysine moiety

[C].

ε-N-biotinyl-L-lysine

[D].

ε-N-lipoyl – L-lysine

Answer: Option A

Explanation:

No answer description available for this question.

Question: Lipoic acid is a co-factor of the
[A].

pyruvic dehydrogenase

[B].

α-ketoglutaric dehydrogenase

[C].

both (a) and (b)

[D].

di-hydroorotate dehydrogenase

Answer: Option C

Explanation:

No answer description available for this question.

Question: Lipoic acid exists in
[A].

oxidized form

[B].

reduced form

[C].

oxidized and reduced form both

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.