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Brainlag Learn / GCSE Biology

Cell biology

Cell structure, microscopy and magnification, specialised and stem cells, mitosis, diffusion, osmosis and active transport, and culturing bacteria.

Lessons

  1. Animal, plant and bacterial cellsThe parts of animal, plant and bacterial cells, what each part does, and how big cells and their parts are. 20 min, free
  2. Microscopes and magnificationLight and electron microscopes, resolution, the magnification calculation with unit changes and standard form, and the microscopy required practical. 25 min, free
  3. Specialised cells and stem cellsHow cells become specialised, the adaptations of key animal and plant cells, and the uses, risks and ethics of stem cells. 25 min, free
  4. Chromosomes, mitosis and the cell cycleChromosomes, the three stages of the cell cycle, doubling numbers of cells, and how long cells spend in each stage. 20 min, free
  5. Diffusion, osmosis and active transportHow substances move into and out of cells, surface area to volume ratios, and the osmosis required practical with percentage change in mass. 25 min, free
  6. Culturing microorganismsBinary fission and bacterial numbers, aseptic technique, and the clear-zone required practical with areas from πr². 20 min, free, Biology only

Practise and test

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