Multiple Choice
In a polypeptide, you would expect a peptide bond to link which pair of atoms between two amino acids?
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4. Protein Structure
Peptide Bond
Multiple Choice
During the formation of a peptide bond between two amino acids, which molecule is released as a byproduct of the condensation reaction?
A
(ammonia)
B
(water)
C
(carbon dioxide)
D
(oxygen gas)
Verified step by step guidance1
Understand that a peptide bond forms between the carboxyl group (-COOH) of one amino acid and the amino group (-NH2) of another amino acid.
Recognize that the formation of a peptide bond is a condensation reaction, which means it involves the removal of a small molecule as two molecules join together.
Identify the groups involved: the -OH from the carboxyl group of one amino acid and an -H from the amino group of the other amino acid are removed.
Combine the removed -OH and -H to form a water molecule, which is released as a byproduct during the peptide bond formation.
Conclude that the molecule released during the formation of a peptide bond is water (H\_2O), not ammonia, carbon dioxide, or oxygen gas.
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