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1.1 Cell structure

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Question 49

A scientist divided a culture of bacteria into two samples.

The cell walls were removed from the bacteria in sample B without damaging their cell membranes. Both samples were then placed in a solution containing marker molecules.

SampleTreatmentBacteria retaining their usual shape (%)Bacteria containing marker molecules after 10 minutes (%)
ACell walls not removed968
BCell walls removed239

Using the results, explain the different functions of the bacterial cell wall and cell membrane.

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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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