Biology 9700/23 Oct Nov 2017 | Cambridge AS Level Past Papers With Mark Scheme

1. Calculating organelle dimensions from electron micrographs and identifying subcellular structures with their roles.

2. Structural and functional differences between heart ventricles and their roles in blood circulation.

3. Alveolar adaptations for gas exchange, roles of macrophages and neutrophils, and the impact of elastase in pulmonary diseases.

4. Trends in malaria cases and deaths, causes for changes, and challenges in controlling the disease despite advancements.

5. Changes in transpiration rates and water potential in Caryocar brasiliense over time, linked to adaptations reducing transpiration.

6. EGF's role in cell cycle control, phases requiring high mRNA production, DNA synthesis in the S phase, and chromosome behavior during mitosis.