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- Electron micrograph analysis of onion root cells, freeze-fracture technique, cell membrane structures, ribosomes, nuclear envelope, plasmodesma.
- Cell structures capable of vesicle formation: cell surface membrane, endoplasmic reticulum, Golgi body.
- Functions of cell structures: polypeptide synthesis, lipid synthesis, hydrolytic enzyme packaging, membrane-bound sacs, non-membrane-bound structures.
- Tonoplast presence in specific cell types: root hair, companion cells, sieve tube elements, endodermis.
- Organelles with double membranes: chloroplasts, mitochondria, nuclei, vacuoles.
- Mitochondrial evolution hypothesis: folded internal membrane, circular DNA, 70S ribosomes, prokaryotic features.

CIE AS & A Level Biology (9700) Jun 2023 Biology (9700) directory

Laura Bellini

Classification: Paper 1

Page count: 20

Viewed: 243

Last update: 3 months ago

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Biology 9700/11 May June 2023 | Cambridge AS Level Past Papers With Mark Scheme

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