Biology 9700/22 March 2023 | Cambridge AS Level Past Papers With Mark Scheme

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- Eukaryotic and prokaryotic cell structures: nucleus, Golgi body, circular DNA, 70S ribosome.
- Cell cycle phases: G1 phase (cell growth, organelle duplication), S phase (DNA replication).
- Mucins and cysteine: covalent bonds between R-groups, mucin transport mechanisms.
- Cystic fibrosis: CFTR gene mutation, thicker mucus effects on gas exchange.
- Infectious diseases: definitions, causative organisms, vaccination impact on disease spread.
- Collagen structure: strength in skin, collagenase activity influenced by pH levels.

CIE AS & A Level Biology (9700) Mar 2023

Laura Bellini

Classification: Paper 2

Page count: 20

Viewed: 162

Last update: 2 months ago

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Biology 9700/22 March 2023 | Cambridge AS Level Past Papers With Mark Scheme

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