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1.1 Cell structures

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Question 18
F

A student looks at onion epidermis cells using a light microscope.

The diameter of the field of view is 0.4 mm. Eight cells fit end to end across the diameter of the field of view.

What is the best estimate of the length of one cell?

[1]
A

5 μm5\ \mu\text{m}5 μm

B

20 μm20\ \mu\text{m}20 μm

C

50 μm50\ \mu\text{m}50 μm

D

3200 μm3200\ \mu\text{m}3200 μm

Markscheme

1.1 Cell structures Questions

  1. GCSE
  2. /Biology
  3. /1.1 Cell structures

130 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.

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