Question detail
Which of the following is NOT a characteristic of 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
Reactions of alkenes and alcohols (chemistry only)
Question
- A. They have a central carbon atom.
- B. They contain an amine group.
- C. They are all identical in structure.
- D. They contain a carboxyl group.
Answer
The correct option is They are all identical in structure..
Explanation
The correct option is They are all identical in structure.. They are all identical in structure. is correct because it directly supports the approved learning objective to amino acids have two different functional groups in a molecule. This belongs to Polymerisation and naturally occurring polymers within Reactions of alkenes and alcohols (chemistry only), so the answer must use the correct organic chemistry context. The other options are incorrect when they confuse the organic family, formula type, reaction condition, product, or property being tested. Keep molecular formula, structural formula, displayed formula, and general formula distinct. Do not confuse alkanes with alkenes, saturated with unsaturated, cracking with combustion, polymers with monomers, or hydrocarbons with oxygen-containing alcohols and carboxylic acids. When formulae are used, preserve the stored notation exactly and explain the GCSE chemistry idea in words rather than using unsupported displayed-formula diagrams.
Common mistake
Confusing Functional Groups
Students often confuse the two functional groups present in amino acids, thinking they only have one.
Remember that amino acids contain both an amine group (–NH2) and a carboxylic acid group (–COOH).
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