Explain how energy originally supplied by the Sun is eventually used to power the muscles of a lion when it runs.

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2020). The mark or mark type is shown in brackets.

1. [1] light energy + transferred to chemical energy ;
2. [1] (in) plants / producers ;
3. [1] during photosynthesis ;
4. [1] produce + glucose / sucrose / sugar / starch / carbohydrates / fats / proteins;
5. [1] food / energy from plant to herbivore or named example ;
6. [1] food / energy from herbivore to lion AW ;
7. [1] absorption + named solute;
8. [1] respiration;
9. [1] energy from respiration + contraction / for muscles ;
10. [1] less energy / fossil fuels + used in recycling (than in manufacture) AW ;
11. [1] fossil fuels / resources + finite / running out / need conserving AW ;
12. [1] reduce pollution / reduce waste + environment / landfill / being burnt ORA ;
13. [1] plastics / some materials + don't biodegrade / decompose ;
14. [1] example of an effect + specified waste ;