Biology 9700/42 March 2021 | Cambridge AS Level Past Papers With Mark Scheme
- Mitosis stages identification: E and F cells, microtubules function in mitosis.
- DNA semi-conservative replication: unwinding, enzyme roles, telomeres function.
- Phloem and xylem transport: sugar source to sink, water and mineral ion needs.
- Capillary network: blood vs. tissue fluid differences, lymphatic fluid formation.
- Hormone signaling: steroid hormone entry, receptor specificity, gene activation.
- Immune system disorders: myasthenia gravis mechanism, HIV/AIDS preventive measures.

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