Describe the process of polymerisation that occurs when glycine molecules combine to form polypeptides.

The polymerisation of glycine involves a condensation reaction where the amino group of one glycine molecule reacts with the carboxyl group of another, releasing a water molecule and forming a peptide bond. This process can repeat, leading to the formation of longer polypeptide chains.

This question evaluates the student's ability to explain the specific chemical process of polymerisation involving glycine. It tests their understanding of the functional groups involved and the significance of peptide bonds in protein synthesis. This response is aligned to Polymerisation and naturally occurring polymers because it explains glycine polymerises to produce a polypeptide. (HT only) using the correct AQA GCSE Chemistry organic context. 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. This response is aligned to Polymerisation and naturally occurring polymers because it explains glycine polymerises to produce a polypeptide. (HT only) using the correct AQA GCSE Chemistry organic context. 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.