McGraw-Hill Online Learning Center Test

1. Review the image and answer the following questions.

Choose the statement that is true about peptide bonds.

A. A peptide bond is an ionic bond occurring between adjacent amino acids.
B. A peptide bond is a covalent bond that occurs only between amino acids.
C. Peptide bonds occur in all organic macromolecules.
D. A peptide bond is a special type of hydrogen bond found only in large protein molecules.

2. Peptide bonds occur between what two functional groups of adjacent amino acids?

A. carboxyl group of one amino acid and amino group of the other
B. hydroxyl group of one amino acid and the sulfhydryl group of the other
C. carbonyl group of one amino acid and the carboxyl group of the other
D. phosphate group of one amino acid and the hydroxyl group of the other

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