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2.1 Supplying the cell

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Question 16

A commercial fermentation tank contains:

  • 7.57.57.5 million yeast cells per cubic millimetre (mm3\text{mm}^3mm3) of liquid culture.
  • 1.81.81.8 cubic metres (m3\text{m}^3m3) of liquid culture.

(1 m3=1 000 000 000 mm31\text{ m}^3 = 1\,000\,000\,000\text{ mm}^31 m3=1000000000 mm3)

Calculate how many yeast cells are in the fermentation tank. Give your answer in standard form.

[3]
Markscheme

2.1 Supplying the cell Questions

  1. GCSE
  2. /Biology
  3. /2.1 Supplying the cell

82 exam-style questions on OCR GCSE Biology 2.1 Supplying the cell, covering 2.1.1 Transport across cell membranes, 2.1.2 Mitosis and the cell cycle, 2.1.3 Importance of cell differentiation, and 2.1.4 Stem cells. Each one has a worked solution and a mark scheme showing where the marks go.

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