Subject - Chemistry:

Basics

MCQ - 576-2762

Question:

Amino acids with hydroxyl groups are

serine and alanine
Alanine and valine
serine and threonine
Alanine and valine

Correct Answer: C

Explanation:

Serine (abbreviated as Ser) is an amino acid with the formulaHO2CCH(NH2)CH2OH. By virtue of the hydroxyl group, serine is classified as a polar amino acid.
Threonine (abbreviated as Thr) is an α-amino acid with the chemical formula HO2CCH (NH2) CH (OH) CH3. This essential amino acid is classified as polar. Together with serine, threonine is one of two protein-ogenic amino acids bearing an alcohol.

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