Biology 9700/43 May June 2017 | Cambridge AS Level Past Papers With Mark Scheme

1. Homeostasis roles of mammalian kidney and osmoregulation by hypothalamus and posterior pituitary.

2. Photosynthetic efficiency in coral-associated algae versus free-living algae, and pigment separation via chromatography.

3. Genetic modification in oil seed rape for herbicide resistance, focusing on plasmid properties and potential ecological risks.

4. ATP usage in aerobic respiration stages and effects of epicatechin on mitochondrial efficiency in exercise endurance.

5. Herbicide resistance in biotype X red poppies, mutation impact on enzyme activity, and ecosystem dynamics with herbicide changes.

6. Tropomyosin and myosin roles in muscle contraction; fast twitch and slow twitch muscle fiber adaptations for function.