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1.1 Cell structure

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Question 30

A scientist wants to follow one living bacterium from before it begins to divide until two cells have formed.

The bacterium is then killed and prepared as a specimen. The scientist wants to determine whether two structures that are 120 nm apart can be seen separately.

MicroscopeShortest distance that can be resolved in nm
Light microscope, P200
Electron microscope, Q0.8

Suggest which microscope the scientist should use for each stage of the investigation. Use the information in the table and your knowledge of microscopes to justify your choices.

[5]
Markscheme

1.1 Cell structure Questions

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

282 exam-style questions on AQA GCSE Biology 1.1 Cell structure, covering 1.1.1 Eukaryotes and prokaryotes, 1.1.2 Animal and plant cells, 1.1.3 Cell specialisation, 1.1.4 Cell differentiation, 1.1.5 Microscopy, and 1.1.6 Culturing microorganisms. Each one has a worked solution and a mark scheme showing where the marks go.

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