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1.2 Number, size and scale

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Question 28
H

A student counts 42 cells in a region of tissue with an area of 3.0 × 10-3 mm2.

Assume that the cells are distributed evenly.

How many cells would be expected in 0.45 mm2 of the tissue?

[1]
A

1.4×1041.4\times10^{4}1.4×104

B

1.9×1011.9\times10^{1}1.9×101

C

6.3×1036.3\times10^{3}6.3×103

D

6.3×1026.3\times10^{2}6.3×102

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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