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1.2 Number, size and scale

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Question 23
H

A sample contains 3.6 × 105 bacterial cells. Their mean length is 2.5 μm2.5\,\mu\mathrm{m}2.5μm.

What would be the total length, in metres, if all the cells were placed end to end with no gaps?

[1]
A

9.0×10−2 m9.0\times10^{-2}\,\mathrm{m}9.0×10−2m

B

9.0×101 m9.0\times10^{1}\,\mathrm{m}9.0×101m

C

9.0×10−1 m9.0\times10^{-1}\,\mathrm{m}9.0×10−1m

D

9.0×102 m9.0\times10^{2}\,\mathrm{m}9.0×102m

Markscheme

1.2 Number, size and scale Questions

  1. GCSE
  2. /Biology
  3. /1.2 Number, size and scale

48 exam-style questions on Edexcel GCSE Biology 1.2 Number, size and scale, covering 1.2.1 Number, size and scale with estimations and 1.2.2 Quantitative units in relation to cells. Each one has a worked solution and a mark scheme showing where the marks go.

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