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1.1 Cell structure

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Question 11
F42%

A student prepares a slide of onion epidermis tissue to view using a light microscope.

a.

Explain why the student adds iodine solution to the tissue.

[2]
b.

Explain why the piece of onion tissue must be only one cell thick.

[2]
c.

The student lowers the coverslip slowly and at an angle.

Give one reason why.

[1]
Markscheme

1.1 Cell structure Questions

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

129 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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