Amino Acids — Overview & Structure

By HHannah Bonville

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Hannah Bonville
Deena Hauze

The formation of a peptide bond releases a water molecule. — Image source: By CNX OpenStax CC BY 4.0, via Wikimedia Commons

The diagram above shows the formation of a peptide bond between two amino acids. Which of the following statements correctly describes how two amino acids join together?

Choose one answer

Option A: A

The carboxyl group of one amino acid bonds to the carboxyl group of the other.

Option B: B

The amino group of one amino acid bonds to the functional (R) group of the other.

Option C: C

The functional (R) group of one amino acid bonds to the carboxyl group of the other.

Option D: D

The carboxyl group of one amino acid bonds to the amino group of the other.

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