Question detail
What functional groups are present in glycine?
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. –OH and –COOH
- B. –NH2 and –COOH
- C. –OH and –NH2
- D. –COOH and –CHO
Answer
The correct option is –NH2 and –COOH.
Explanation
The correct option is –NH2 and –COOH. –NH2 and –COOH is correct because it directly supports the approved learning objective to glycine polymerises to produce a polypeptide. (HT only). 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
Misunderstanding Glycine Polymerisation
Students often confuse glycine polymerisation with other types of reactions, thinking it involves simple addition rather than condensation.
Emphasize that glycine polymerises through condensation polymerisation, where water is released as the amino acids join to form polypeptides.
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