CAIE A Level Biology 9700 · Cell structure
A student examines two cells, Cell A and Cell B, using an electron microscope. The table below shows the presence (+) or absence (-) of various structures in each cell.
| Structure | Cell A | Cell B |
|---|---|---|
| Cell wall | + | - |
| Chloroplast | + | - |
| Large central vacuole | + | - |
| Centriole | - | + |
| Cilia | - | + |
| Nucleus | + | + |
| Mitochondria | + | + |
| 80S ribosomes | + | + |
Outline which cell (A or B) is from a plant and which is from an animal. Use the evidence in the table to support your answer.
6 marks, so the mark scheme is looking for about 6 separate creditworthy points. Making the same point twice in different words earns it once.
Outline means: Give the main points briefly. Less detail than describe, but every key step has to be there. One short line per step, in order. The marks are for coverage, not depth.
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