Cambridge AS & A Level Biology
4.2Movement into and out of cells
Movement into and out of cells in Cambridge AS & A Level Biology: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic61 practice questions3 lessons
Learning objectives
What the syllabus expects you to be able to do.
- 4.2.1Describe and explain simple diffusion, facilitated diffusion, osmosis, active transport, endocytosis and exocytosis.
- 4.2.2Investigate diffusion and osmosis with plant tissue, Visking tubing and agar.
- 4.2.3Show by calculation that surface area to volume ratio decreases as size increases.
- 4.2.4Investigate the effect of surface area to volume ratio on diffusion with agar blocks.
- 4.2.5Estimate the water potential of a plant tissue from immersion in solutions of different water potentials.
- 4.2.6Explain water movement in terms of water potential and its different effects on plant and animal cells.
Lessons
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Active transport, endocytosis and exocytosis
30 min
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Diffusion, facilitated diffusion and osmosis
35 min
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Surface area to volume ratio and diffusion
30 min
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Sample question
A sample question on this topic. Answer it, check it, then read the worked answer.
Turn Movement into and out of cells into a strength.
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