Biochemistry

Question: Aldolases splits fructose 1,6 biphosphate into
[A].

glyceraldehyde 3- phosphate

[B].

glyceraldehyde 3- phosphate and dihydroxyacetone phosphate

[C].

dihydroxyacetone phosphate

[D].

none of the above

Answer: Option B

Explanation:

No answer description available for this question.

Question: Fructose is metabolized by
[A].

fructose 1-phosphate pathway

[B].

fructose 6-phosphate pathway

[C].

glyceraldehyde 3-phosphate pathway

[D].

both (a) and (b)

Answer: Option D

Explanation:

No answer description available for this question.

Question: In the Glycolysis reaction, for each glucose conversion how many ATP’s are produced?
[A].

4

[B].

2

[C].

1

[D].

3

Answer: Option B

Explanation:

No answer description available for this question.

Question: Under aerobic condition pyruvate is converted by pyruvate dehydrogenase to
[A].

phosphoenol pyruvate

[B].

acetyl CoA

[C].

lactate

[D].

glyceraldehyde 3 phosphate

Answer: Option B

Explanation:

No answer description available for this question.

Question: Glycolysis reactions take place in
[A].

cytoplasm

[B].

cell membrane

[C].

cell wall

[D].

plasmids

Answer: Option A

Explanation:

No answer description available for this question.

Question: Which of the following compounds is responsible for coordinated regulation of glucose and glycogen metabolism?
[A].

NAD+

[B].

Fructose 2,6 bisphosphate

[C].

Acetyl-CoA

[D].

Fructose 1,6 bisphosphate

Answer: Option B

Explanation:

No answer description available for this question.

Question: Which of the following is carried out when cAMP functions as a second messenger?
[A].

Acts second in importance to AMP

[B].

Activates all cytosolic protein kinases

[C].

Activates the cAMP-dependent protein kinase

[D].

Acts outside the cell to influence cellular processes

Answer: Option C

Explanation:

No answer description available for this question.

Question: The hormones, glucagon and epinephrine, stimulate glycogen breakdown to G-6-P
[A].

only in the liver

[B].

using ATP as the phosphoryl donor

[C].

directly, by binding to glycogen phosphorylase

[D].

indirectly, by first stimulating adenylate cyclase to make cAMP

Answer: Option D

Explanation:

No answer description available for this question.

Question: Each reaction in a metabolic pathway is
[A].

reversible

[B].

irreversible

[C].

catalyzed by a specific enzyme

[D].

controlled by the end product

Answer: Option C

Explanation:

No answer description available for this question.

Question: Regulated metabolic pathways are
[A].

compartmentalized in eukaryotes

[B].

usually regulated at the first step

[C].

committed after the first step

[D].

all of these

Answer: Option D

Explanation:

No answer description available for this question.