Biology 9700/22 Oct Nov 2017 | Cambridge AS Level Past Papers With Mark Scheme

1. Observing root apical meristem regions with the highest mitotic activity and describing nuclear envelope behavior during mitosis.

2. Structural comparisons between phospholipids and triglycerides, highlighting similarities and differences.

3. Km value analysis for hydrolytic enzymes to determine enzyme-substrate affinity differences.

4. Cholera treatment and pathophysiology, focusing on electrolyte loss, oral rehydration therapy, and the effectiveness of antibiotics.

5. Xylem structure and water transport mechanisms, addressing apoplastic and symplastic pathways and nocturnal water movement slowdown.

6. Cardiac anatomy and physiology, emphasizing the role of valves, sinoatrial node, and atrioventricular node in coordinating heart action.