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1.1 Cell structures

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Question 23
H

In a transmission electron micrograph, the image of a ribosome is 5 mm wide. The magnification is ×200 000\times 200\,000×200000.

What is the actual width of the ribosome?

[1]
A

2.5 nm2.5\ \text{nm}2.5 nm

B

25 nm25\ \text{nm}25 nm

C

250 nm250\ \text{nm}250 nm

D

2500 nm2500\ \text{nm}2500 nm

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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