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.
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.
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.
Name the parts of plant and animal cells, say what each part does, and spot the differences between them.
Some living things are just one cell. See how an amoeba, Euglena, yeast and bacteria are adapted to move, feed and survive.
Explain how oxygen, carbon dioxide and other substances move into, out of and between cells by diffusion.
See how specialised cells make up tissues, organs, organ systems and whole organisms.
Five quick diagram questions a day from this unit. The ones you get wrong come back sooner. Progress saves in this browser.
Mapped to the KS3 national curriculum (Biology: cells and organisation).
| Programme of study | Lesson |
|---|---|
| cells as the fundamental unit of living organisms, including how to observe, interpret and record cell structure using a light microscope | 1.1 |
| the functions of the cell wall, cell membrane, cytoplasm, nucleus, vacuole, mitochondria and chloroplasts | 1.2 |
| the similarities and differences between plant and animal cells | 1.2 |
| the structural adaptations of some unicellular organisms | 1.3 |
| the role of diffusion in the movement of materials in and between cells | 1.4 |
| the hierarchical organisation of multicellular organisms: from cells to tissues to organs to systems to organisms | 1.5 |