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GCSE Biology · key term
The building of larger molecules from smaller molecules or subunits.
Used by AQA, Edexcel and OCR
Specification 4.4.2.3 · Paper 1
A reaction that joins smaller molecules to make a larger molecule.
Revise: MetabolismTogether, these examples show why metabolism is not a single reaction: it is a connected set of synthesis and breakdown reactions.
Specification 1.12 · Paper 1, Paper 2
The building of larger molecules from smaller molecules.
Revise: Importance of EnzymesSynthesis reactions join smaller molecules to form larger molecules.
Specification B1.3d, B1.3e, B1.3f · Paper 1 (Foundation), Paper 3 (Higher)
Revise: Role of sugarsSynthesis means building a larger molecule from smaller subunits.
The building of a larger molecule from smaller subunits.
The production of a larger or more complex molecule from smaller molecules.
Include both synthesis and breakdown when explaining metabolism; respiration is one of its reactions.
For lipid synthesis, specify one glycerol molecule and three fatty acid molecules.
State the direction of the reaction clearly: synthesis builds larger molecules, whereas breakdown produces smaller molecules.
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