Chlamydomonas is a genus of single-celled green algae found in freshwater habitats.
Name two sub-cellular structures a Chlamydomonas cell has in common with a typical animal cell.
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Explain why a Chlamydomonas cell is not classified as an animal cell.
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A micrograph of a Chlamydomonas cell is captured using a light microscope.
The actual diameter of this Chlamydomonas cell is 6.8 μm6.8\ \mu\text{m}6.8 μm. In the printed micrograph, the diameter of the cell measures 58 mm58\text{ mm}58 mm.
(1 mm=1000 μm1\text{ mm} = 1000\ \mu\text{m}1 mm=1000 μm)
Calculate the magnification of the micrograph. Give your answer to 3 significant figures.
Magnification = ....................................................................
Chlamydomonas cells can carry out photosynthesis. Which gas is produced during this process?
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40 exam-style questions on OCR GCSE Biology 1.1 Cell structures, covering 1.1.1 Viewing cells with light microscopes, 1.1.2 Sub-cellular structures and functions, and 1.1.3 Electron microscopy and resolution. Each one has a worked solution and a mark scheme showing where the marks go.