IGCSE biology notes on respiration cover aerobic and anaerobic pathways, ATP as energy currency, and fermentation examples (yeast, muscle).

Hub: IGCSE biology notes · Respiration guide · Gas exchange.

Your respiration note page

Section	Content
Aerobic	Glucose + O₂ → CO₂ + H₂O + ATP
Anaerobic	Lactic acid (muscle); ethanol + CO₂ (yeast)
Uses of energy	Growth, active transport, temperature
Compare	Photosynthesis not the same equation reversed in words sloppily

Frequently asked questions

Do I need mitochondria diagram?

Often yes in extended answers — link to cell notes.

Practical fermentation notes?

Method, temperature control, gas collection — one paragraph in notes.

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