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3.2 Cells
Quick questions on Mitosis and the cell cycle: stages, mitotic index and cancer - AQA A-Level Biology
6short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is the cell cycle?Show answer
The cell cycle is the regulated sequence a cell follows to grow and divide.
What is the stages of mitosis?Show answer
Mitosis produces two genetically identical diploid daughter cells. Remember the order with the four stages:
What is mitotic index?Show answer
The mitotic index measures the proportion of cells actively dividing:
What is q1?Show answer
Put the stages of mitosis in order and give one event of each. [4 marks]
What is q2?Show answer
In a tissue sample of 80 cells, 12 are in mitosis. Calculate the mitotic index as a percentage. [1 mark]
What is q3?Show answer
Explain the difference between a proto-oncogene mutation and a tumour suppressor gene mutation in causing cancer. [3 marks]
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