A student counted cells from the edge of a healing cut in a sample of skin. The complete cell cycle takes 20 hours. Of the 60 cells counted, 9 were in mitosis.
Show how the student could calculate the time spent in mitosis.
104 exam-style questions on AQA GCSE Biology 1.2 Cell division, covering 1.2.1 Chromosomes, 1.2.2 Mitosis and the cell cycle, and 1.2.3 Stem cells. Each one has a worked solution and a mark scheme showing where the marks go.