Which of the following statements about the peptide- bonded backbone is correct?
A) The orientation of the side chains in the backbone does not allow them to interact with each other or water.
B) Both ends of the backbone have a free carboxyl group.
C) Interactions only take place between C=O and N-H groups in the different peptide- bonded backbones.
D) Both ends of the backbone have a free amino group.
E) One end of the backbone has a free amino group while the other has a free carboxyl group.

Question

Quizplus · Accepted Answer

The peptide-bonded backbone consists of a repeating sequence of nitrogen, carbon, and oxygen atoms. The amine group (-NH2) of one amino acid is bonded to the carboxyl group (-COOH) of another amino acid through a peptide bond, creating a backbone with a free amine group (-NH2) at one end and a free carboxyl group (-COOH) at the other. Therefore, option E is the correct choice.

Which of the Following Statements About the Peptide- Bonded Backbone