IGCSE biology notes on enzymes need graph sketches (temperature and pH) and clear definitions — catalyst, active site, denatured.

Hub: IGCSE biology notes · Enzymes & pH keyword · Biological molecules exam tips.

Note page sections

Section	Key points
Tests	Starch, reducing sugar, protein, fat — colours
Enzymes	Lock-and-key / induced fit (syllabus wording)
Factors	Temperature, pH, concentration — effect on rate
Molecules	Carbohydrate, protein, lipid roles (brief)

Exam link

Practise explaining graphs in words — command words.

Frequently asked questions

Draw enzyme graphs from notes only?

Yes — weekly recall without looking.

Combined Science enzymes?

Combined science notes — less depth.

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