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1.2 Cell division

1.2 Cell division

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Question 20
F

Scientists measured the mass of DNA in one cell over a period of 40 hours. The figure shows the results.

Figure: The mass of DNA in one cell over a period of 40 hours

image

a.

Use the figure to give the length of one complete cell cycle in these cells.

[1]
b.

Explain what is happening inside the cell between 8 hours and 14 hours.

[2]
c.

Explain why the mass of DNA in one cell falls at 20 hours.

[2]
d.

A student looked at the figure and said, 'The two cells made at 20 hours must be genetically different from each other.' Explain why the student is wrong.

[2]
Markscheme

1.2 Cell division Questions

  1. GCSE
  2. /Biology
  3. /1.2 Cell division

63 exam-style questions on AQA GCSE Biology 1.2 Cell division, covering 1.2.1 Chromosomes, 1.2.2 Mitosis and the cell cycle, and 1.2.3 Stem cells. Each one has a worked solution and a mark scheme showing where the marks go.

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