KS3 Science · Biology
Cells
Nine short lessons. Look at the picture, learn three things, then play.
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Key words
Cell Smallest building block of a living thing
Nucleus Controls the cell
Cell membrane Controls what goes in and out
Cytoplasm Jelly where reactions happen
Mitochondria Release energy by respiration
Cell wall Tough layer that supports a plant cell
Chloroplasts Absorb light for photosynthesis
Vacuole Bag of cell sap
Unicellular Made of one cell
Multicellular Made of many cells
Diffusion Particles spreading from high to low concentration
Tissue Similar cells working together
Organ Different tissues working together
Stain Dye that makes cell parts show up
Specialised cell Cell with special features for one job
Flagellum Whip-like tail for swimming