Amino Acids Questions & Answers - Page 5

21.

Which pair of amino acids absorbs the most UV light at 280 nm?

A.

Threonine & Histidine

B.

Trp & Tyrosine

C.

Cystein & Asparagine

D.

Phenylalnine & Proline

Correct answer is B

No explanation has been provided for this answer.

22.

What is the average mass of an amino acid residue in a polypeptide?

A.

110 daltons

B.

118 daltons

C.

80 daltons

D.

150 daltons

Correct answer is A

No explanation has been provided for this answer.

23.

Which of the following pairs of amino acids would carry a negative charge on their side chain at pH 8.0?

A.

Asparagine & Glutamine

B.

Leucine & Glycine

C.

Histidine & Lysine

D.

Aspartate & Glutamate

Correct answer is D

No explanation has been provided for this answer.

24.

D-Alanine and L-Alanine are technically known as

A.

anomers

B.

enantiomers

C.

epimers

D.

polymer

Correct answer is B

No explanation has been provided for this answer.

25.

An essential amino acid is one that

A.

is essentially easy to synthesize

B.

is essential to flagella motion

C.

the body cannot synthesize

D.

the body can synthesize under essential conditions

Correct answer is C

No explanation has been provided for this answer.