Question

4. Amino acids with hydroxyl groups are :

(A) serine and alanine

(B) alanine and valine

(C) serine and threonine

(D) valine and isoleucine​

Answer 1

Answer:

Serine and threonine

Explanation:

Two amino acids, serine and threonine, contain aliphatic hydroxyl groups (that is, an oxygen atom bonded to a hydrogen atom, represented as ―OH). Tyrosine possesses a hydroxyl group in the aromatic ring, making it a phenol derivative.

Answer 2

Answer:

(C) serine and threonine is your answer

Explanation:

Two amino acids, serine and threonine, contain aliphatic hydroxyl groups (that is, an oxygen atom bonded to a hydrogen atom, represented as ―OH). Tyrosine possesses a hydroxyl group in the aromatic ring, making it a phenol derivative.