Biochemistry questions and answers

Biochemistry Questions and Answers

How well do you understand chemical processes occurring in living matter? Test your knowledge of biochemistry with these questions and answers.

36.

A ketogenic amino acid is one which degrades to

A.

keto-sugars

B.

either acetyl CoA or acetoacetyl CoA

C.

pyruvate or citric acid cycle intermediates

D.

multiple intermediates including pyruvate or citric acid cycle intermediates and acetyl CoA or acetoacetyl CoA

Correct answer is B

No explanation has been provided for this answer.

37.

Lysine is degraded to acetoacetyl CoA and is described as a

A.

ketogenic amino acid

B.

glucogenic amino acid

C.

keto-gluco amino acid

D.

none of these

Correct answer is A

No explanation has been provided for this answer.

38.

Transamination is the transfer of an amino

A.

acid to a carboxylic acid plus ammonia

B.

group from an amino acid to a keto acid

C.

acid to a keto acid plus ammonia

D.

group from an amino acid to a carboxylic acid

Correct answer is B

No explanation has been provided for this answer.

39.

In the normal breakdown of phenylalanine, it is initially degraded to

A.

fumarate

B.

tyrosine

C.

lysine

D.

phenylpuruvate

Correct answer is B

No explanation has been provided for this answer.

40.

An example of the oxidative deamination is

A.

glutamate = hexanoic acid + NH3

B.

aspartate + α-ketoglutarate = glutamate + oxaloacetate

C.

glutamate = α-ketoglutarate + NH3

D.

aspartate + hexanoic acid = glutamate + Oxaloacetate

Correct answer is C

No explanation has been provided for this answer.