Biology 9700/21 Oct Nov 2020 | Cambridge AS Level Past Papers With Mark Scheme
- Human chromosome structure: genetically identical chromatids, centromere, histone proteins.
- Mitosis stages: identification of specific phases where chromosomes appear as shown.
- ATP role in mitosis: energy source, chromatid movement, spindle formation.
- Binary fission in prokaryotes: DNA replication, cell membrane division, absence of mitotic spindle.
- Triglyceride formation: ester bond identification, condensation reaction, water molecule production.
- Lipase activity in triglyceride digestion: enzyme characteristics, pH changes, effect of concentration on reaction rate.

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