A body cell of a fruit fly contains 8 chromosomes. The cell divides by mitosis.
State the number of chromosomes in each daughter cell.
Explain why the DNA in the cell must be copied before mitosis begins.
A drug used to treat cancer stops the chromosomes being pulled apart during anaphase.
Explain how this drug could slow down the growth of a tumour.
People treated with this drug often lose their hair. Hair is produced by cells that divide often.
Suggest why this drug causes hair loss.
42 exam-style questions on Edexcel GCSE Biology 2.1 Cell division and growth, covering 2.1.1 Mitosis and the cell cycle, 2.1.2 Division producing identical daughter cells, 2.1.3 Cancer and uncontrolled cell division, 2.1.4 Growth in animals and plants, 2.1.5 Importance of cell differentiation, and 2.1.6 Percentile charts to monitor growth. Each one has a worked solution and a mark scheme showing where the marks go.