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1.1 Cell structure

1.1 Cell structure

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Question 25
F

In school laboratories, cultures are incubated at no higher than 25 °C. Why is this temperature used?

[1]
A

The enzymes of all species of bacteria are denatured above this temperature

B

Agar jelly melts above this temperature and would no longer stay solid

C

Pathogens that are harmful to humans are less likely to grow at this temperature

D

Bacteria are unable to reproduce by binary fission above this temperature

Markscheme

1.1 Cell structure Questions

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

163 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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