Question detail
What type of bond is formed during the condensation reaction between two amino acids?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Amino acids, proteins and DNA (A-level only)
Question
- A. Ionic bond
- B. Peptide bond
- C. Hydrogen bond
- D. Disulfide bond
Answer
Peptide bond
Explanation
During the condensation reaction between two amino acids, a peptide bond is formed, which links the amine group of one amino acid to the carboxylic acid group of another, releasing a molecule of water.
Common mistake
Confusing Functional Groups
Students often describe amino acids without clearly identifying the presence of both amine (-NH2) and carboxylic acid (-COOH) functional groups.
To fix this, remember that an amino acid contains both an amine group and a carboxylic acid group. For example, the general structure of an amino acid can be represented as R-CH(NH2)-COOH, where R represents the variable side chain. Clearly state both functional groups when describing amino acids.
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