A peptide bond forms between which two molecules?

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Multiple Choice

A peptide bond forms between which two molecules?

Peptide bonds form when the carboxyl group of one amino acid reacts with the amino group of another amino acid, releasing a water molecule in a dehydration synthesis and creating a covalent bond between the carbonyl carbon and the amide nitrogen. This specifically links amino acids together, so the two molecules involved are amino acids. If two amino acids are linked, the result is a dipeptide, with the peptide bond holding them together. The other options describe different types of bonds: a sugar–phosphate connection is found in nucleic acids, and nucleotides are joined by phosphodiester bonds; a dipeptide chain is the product of linking amino acids, not the bond itself.

Peptide bonds form when the carboxyl group of one amino acid reacts with the amino group of another amino acid, releasing a water molecule in a dehydration synthesis and creating a covalent bond between the carbonyl carbon and the amide nitrogen. This specifically links amino acids together, so the two molecules involved are amino acids. If two amino acids are linked, the result is a dipeptide, with the peptide bond holding them together. The other options describe different types of bonds: a sugar–phosphate connection is found in nucleic acids, and nucleotides are joined by phosphodiester bonds; a dipeptide chain is the product of linking amino acids, not the bond itself.

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