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Separate Biology · Paper 2 · Foundation + Higher · B7

Farming efficiency and welfare

Key ideas1 of 3

Reduce energy transfers

Food animals use energy for movement and maintaining their body temperature as well as for growth. Limiting movement and controlling the temperature of their surroundings can reduce these energy demands. More of the energy supplied in food may then be retained in new biomass. This can improve production efficiency, but does not mean respiration stops. Animals still need energy for essential cellular processes and must remain healthy.

Illustrative daily energy allocations in MJ. X: food 40, movement respiration 8, other respiration 24, growth 8. Y: food 40, movement respiration 4, other respiration 16, growth 20.

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Practice, downloads and sources

Daily 5 · Exam practice · Revision sheet ↓

Foundation + Higher · B7. Use alongside the shared B7 lessons.

AQA GCSE Biology 8461 · 4.7.5.2. Original notes, questions and diagrams. Models are simplified; teaching data are illustrative.