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1.1 Cell structure

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Question 21

A food microbiologist measures a bacterial concentration of 4.2 × 103 bacteria per cm3\text{cm}^3cm3 in a 200 cm3 portion of vegetable brine.

Calculate how many bacteria there are in the whole portion of brine. Express your answer in standard form.

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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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