1.2 Cell division

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Question 9
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The lengths of two plant structures are given below:

  • Chloroplast length: 6.4 μm6.4\text{ }\mu\text{m}6.4 μm
  • Palisade cell length: 0.16 mm
a.

Calculate the ratio of the length of the chloroplast to the length of the palisade cell in the form 1:n1 : n1:n.

[3]
b.

The cell cycle of a dividing plant cell is represented by a pie chart divided into 40 equal sectors.

  • Stage 1 (Interphase) occupies 26 sectors.
  • Stage 2 (Mitosis) occupies 9 sectors.
  • Stage 3 (Cytokinesis) occupies 5 sectors.

Calculate the percentage of the total time of one cell cycle represented by Stage 2 and Stage 3 together.

[3]

1.2 Cell division Questions

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