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1.1 Cell structure

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Question 16
F

After inoculating an agar plate, a student holds the lid on with four short pieces of adhesive tape and stores the plate upside down in an incubator at 25 °C.

a.

Explain why the lid is held on with adhesive tape.

[2]
b.

Explain why the plate is stored upside down.

[2]
c.

Scientists in a hospital laboratory incubate their cultures at 37 °C, but the student must incubate at no more than 25 °C. Explain why the student must use the lower temperature.

[3]
d.

Suggest why the tape is not wrapped all the way around the edge of the Petri dish.

[1]
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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