Cells, osmosis and why cells stay small, explained with diagrams and real numbers. Each post goes with a letsBug video and ends with practice questions.
- Animal Cell vs Plant Cell: Differences, Table and Diagram: Animal cell vs plant cell, part by part: a clear difference table, a labelled diagram, magnification maths and the common mix-ups.
- Why are cells so small? Surface area to volume ratio: Why are cells so small? Work out the surface area to volume ratio of cubes (6:1, 3:1, 2:1), why it limits diffusion and how lungs get round it.
- Osmosis Potato Practical: Percentage Change in Mass: What is osmosis? Why salt pulls water out of a cucumber, the potato practical with percentage change in mass, and osmosis vs active transport.
More subjects: Maths · Physics · Chemistry · Geography · Code · Builds · Devlog. And how we check facts.
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