A sample of tissue in a young fish contains 240 body cells. During a period of growth, every cell completes three cell cycles. In each cycle, every cell divides once and no cells die.
Calculate the number of cells in the tissue after the three cell cycles.
Name the type of nuclear division involved.
Explain why this type of division is suitable for growth while preserving the genetic information in the tissue.
194 exam-style questions on OCR GCSE Biology 2.1 Supplying the cell, covering 2.1.1 Transport across cell membranes, 2.1.2 Mitosis and the cell cycle, 2.1.3 Importance of cell differentiation, and 2.1.4 Stem cells. Each one has a worked solution and a mark scheme showing where the marks go.