A researcher produces a population of a single-celled organism by asexual reproduction from one parent cell. Cells from this population are placed into culture A and culture B.
A new disease enters culture A. The table shows the number of living cells in culture A.
| Time after the disease enters culture A | Number of living cells |
|---|---|
| 0 hours | 2 400 000 |
| 6 hours | 600 000 |
| 12 hours | 0 |
Calculate the percentage decrease in the number of living cells in culture A during the first 6 hours.
Explain the risk to culture B if the disease enters this culture. Use the results in the table.
92 exam-style questions on Edexcel GCSE Biology 3.1 Reproduction and meiosis, covering 3.1.1 Advantages and disadvantages of reproduction and 3.1.2 Role of meiotic cell division. Each one has a worked solution and a mark scheme showing where the marks go.