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1.2 Number, size and scale

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Question 24
H

Four equal volumes from a well-mixed suspension contain 1.6 × 104, 2.0 × 104, 1.8 × 104 and 2.2 × 104 cells.

The whole suspension has a volume 250 times greater than each sampled volume.

Which is the best estimate of the number of cells in the whole suspension?

[1]
A

4.75×1064.75\times10^{6}4.75×106

B

1.90×1061.90\times10^{6}1.90×106

C

7.60×1067.60\times10^{6}7.60×106

D

1.90×1071.90\times10^{7}1.90×107

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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