MDCAT Biology MCQ #855

During protein synthesis on the ribosome, a peptide bond forms between the carboxyl group of one amino acid and the amino group of the next. Which atom is lost from the amino group?

MDCAT Biology MCQ #855

  1. Question 1

    Q1. During protein synthesis on the ribosome, a peptide bond forms between the carboxyl group of one amino acid and the amino group of the next. Which atom is lost from the amino group?

    • A) Oxygen
    • B) Hydrogen
    • C) Nitrogen
    • D) Carbon

    Answer: Hydrogen

    Explanation: The amino group (-NH2) loses one hydrogen atom, while the carboxyl group (-COOH) loses a hydroxyl group (-OH). Nitrogen is retained in the bond.