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Cell division, cell diversity and cellular organisation

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Question 14

A culture of synchronous animal cells is treated with a chemical agent that specifically inhibits mitochondrial translation, preventing the duplication of mitochondria and cell growth. This treatment is administered immediately after the completion of cytokinesis.

In which phase of the cell cycle will these cells accumulate, and what will be their relative DNA mass compared to a cell in the second growth (G2G_2G2​) phase?

A

first growth (G1G_1G1​) phase, with half the DNA mass of a cell in the second growth (G2G_2G2​) phase

B

first growth (G1G_1G1​) phase, with twice the DNA mass of a cell in the second growth (G2G_2G2​) phase

C

second growth (G2G_2G2​) phase, with half the DNA mass of a cell in the first growth (G1G_1G1​) phase

D

synthesis (SSS) phase, with half the DNA mass of a cell in the second growth (G2G_2G2​) phase

Markscheme

Cell division, cell diversity and cellular organisation Questions

  1. A Level
  2. /Biology
  3. /Cell division, cell diversity and cellular organisation

40 exam-style questions on OCR A A Level Biology Cell division, cell diversity and cellular organisation. Each one has a worked solution and a mark scheme showing where the marks go.

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