Biochemistry

Question: Humans are unable to digest
[A].

starch

[B].

complex carbohydrates

[C].

denatured proteins

[D].

cellulose

Answer: Option D

Explanation:

No answer description available for this question.

Question: What is present in the stomach to prevent self-digestion?
[A].

Mucus

[B].

acid

[C].

Enzymes

[D].

hormones

Answer: Option A

Explanation:

No answer description available for this question.

Question: Saliva contains all of the following except
[A].

hormones

[B].

amylase

[C].

bacteria-killing enzymes

[D].

antibodies

Answer: Option A

Explanation:

No answer description available for this question.

Question: Which of the following does not occur during gluconeogenesis?
[A].

The carboxylation of pyruvate to oxaloacetate

[B].

The conversion of pyruvate to phosphoenolpyruvate (PEP)

[C].

The decarboxylation of oxaloacetate to phosphoenolpyruvate

[D].

The conversion of PEP to fructose bisphosphate

Answer: Option B

Explanation:

No answer description available for this question.

Question: The process not involved in the formation of glucose by gluconeo-genesis is
[A].

the conversion of oxaloacetate to glucose

[B].

the conversion of lactate to pyruvate

[C].

the dephosphorylation of glucose-6-phosphate

[D].

all of the above

Answer: Option A

Explanation:

No answer description available for this question.

Question: The conversion of pyruvate to lactate is catalysed by
[A].

pyruvate carboxylase

[B].

lactate dehydrogenase

[C].

pyruvate dismutase

[D].

pyruvate decarboxylase

Answer: Option B

Explanation:

No answer description available for this question.

Question: Glucagon and epinephrine
[A].

inhibits gluconeogenesis and stimulates glycolysis

[B].

stimulates gluconeogenesis and glycolysis

[C].

stimulates gluconeogenesis and inhibits glycolysis

[D].

inhibits gluconeogenesis and glycolysis

Answer: Option C

Explanation:

No answer description available for this question.

Question: Insulin
[A].

stimulates gluconeogenesis and glycolysis

[B].

stimulates gluconeogenesis and inhibits glycolysis

[C].

inhibits gluconeogenesis and glycolysis

[D].

inhibits gluconeogenesis and stimulates glycolysis

Answer: Option D

Explanation:

No answer description available for this question.

Question: Which of the following enzymes plays an important role in the Cori ” cycle?
[A].

Glucokinase

[B].

Glucose-6-phosphate dehydrogenase

[C].

Lactate dehydrogenase

[D].

Glucose isomerase

Answer: Option C

Explanation:

No answer description available for this question.

Question: Patients suffering from Von Gierke’s disease are unable to perform gluconeogeneis because they have a defective
[A].

lactate dehydrogenase

[B].

glucose 6 phosphatase

[C].

pyruvate carboxylase

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.