MCAT Biochemistry Question 102: Answer and Explanation
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Question: 102
12. Peptidyl transferase connects the carboxylate group of the one amino acid to the amino group of an incoming amino acid. What type of linkage is created in this peptide bond?
- A. Ester
- B. Amide
- C. Anhydride
- D. Ether
Correct Answer: B
Explanation:
Peptidyl transferase connects the incoming amino terminal to the previous carboxyl terminal; the only functional group listed here with a carboxyl and amine group is the amide. Peptide bonds are thus amide linkages, and the correct answer is choice (B).