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.

31.

What is the heaviest of the twenty amino acids?

A.

Phenylalanine

B.

Tryptophan

C.

Tyrosine

D.

Histidine

Correct answer is B

No explanation has been provided for this answer.

32.

What is the end product of leucine metabolism?

A.

Acetyl-CoA

B.

Pyruvic acid

C.

Oxaloacetic acid

D.

Acetyl carnitine

Correct answer is A

No explanation has been provided for this answer.

33.

When the amino acid alanine (R-group is CH3) is added to a solution with a pH of 7.3, alanine becomes

A.

a cation

B.

nonpolar

C.

a zwitterions

D.

an isotope

Correct answer is C

No explanation has been provided for this answer.

34.

A person suffering from phenylketonuria on consumption of food containing high phenylalanine may lead to the accumulation of

A.

phenylalanine

B.

phenylpyruvate

C.

tyrosine

D.

isoleucine

Correct answer is B

No explanation has been provided for this answer.

35.

A best described ketogenic amino acid is

A.

lysine

B.

tryptophan

C.

valine

D.

none of these

Correct answer is A

No explanation has been provided for this answer.