KS3Biology · Years 7 to 9

Cells and organisation

Five lessons that start with questions. Focus a microscope on onion cells, build a plant cell part by part, watch an amoeba trap its food, race particles through a cell membrane and zoom from a whole person down to a single cell. Get one wrong and the diagram shows you why. Prefer to read first? Every lesson has animated notes and a lab to try things in.

1.1

Looking at cells

All living things are made of cells. Use a light microscope to see them: focus it, make a slide, work out the magnification and draw what you see.

1.4

Diffusion

Explain how oxygen, carbon dioxide and other substances move into, out of and between cells by diffusion.

Daily 5

Five quick diagram questions a day from this unit. The ones you get wrong come back sooner. Progress saves in this browser.

What this unit covers

Mapped to the KS3 national curriculum (Biology: cells and organisation).

Programme of studyLesson
cells as the fundamental unit of living organisms, including how to observe, interpret and record cell structure using a light microscope1.1
the functions of the cell wall, cell membrane, cytoplasm, nucleus, vacuole, mitochondria and chloroplasts1.2
the similarities and differences between plant and animal cells1.2
the structural adaptations of some unicellular organisms1.3
the role of diffusion in the movement of materials in and between cells1.4
the hierarchical organisation of multicellular organisms: from cells to tissues to organs to systems to organisms1.5
Next at GCSE

B1 Cell biology lessons →   B2 Organisation lessons →