Which of the following statements about the formation of polypeptides from amino acids is true?

a. A bond forms between the carboxyl functional group of one amino acid and the amino functional group of the other amino acid.

b. A bond can form between any carbon and nitrogen atom in the two amino acids being joined.

c. Polypeptides form by condensation or hydrolysis reactions.

d. The reaction occurs through the addition of a water molecule to the am

The answer to your question is letter A.

Explanation:

a. A bond forms between the carboxyl functional group of one amino acid and the amino functional group of the other amino acid. This is the correct answer because peptide bonding is very specific, only happens between the amino group of one amino acid and the carboxyl group of another.

b. A bond can form between any carbon and nitrogen atom in the two amino acids being joined. The answer is incorrect because peptide bonding is very specific it can not happen between any carbon or any nitrogen.

c. Polypeptides form by condensation or hydrolysis reactions. This answer is wrong because hydrolysis does not occur instead of that water is form as a product of this reaction.

d. The reaction occurs through the addition of a water molecule to the am, this answer is wrong, water is formed in this reaction, water is a product of the reaction not a reactant.