Join thousands of students who trust us to help them ace their exams!Watch the first video
Multiple Choice
The two amino acids shown above are joined together by a peptide bond and form a molecule of which of the following in the process?
A
Carbon dioxide (CO$_2$)
B
Oxygen (O$_2$)
C
Ammonia (NH$_3$)
D
Water (H$_2$O)
Verified step by step guidance
1
Understand the process of peptide bond formation: A peptide bond is formed between the carboxyl group (-COOH) of one amino acid and the amino group (-NH$_2$) of another amino acid during a condensation reaction.
Recognize that a condensation reaction involves the removal of a small molecule, typically water (H$_2$O), as the bond is formed.
Visualize the chemical reaction: The hydroxyl group (-OH) from the carboxyl group of one amino acid combines with a hydrogen atom (H) from the amino group of the second amino acid to form water (H$_2$O).
Write the general chemical equation for peptide bond formation: Amino acid 1 + Amino acid 2 → Dipeptide + H$_2$O.
Conclude that the molecule released during peptide bond formation is water (H$_2$O), as this is a characteristic of condensation reactions in biochemistry.