Culture X starts with 1 bacterium and has a mean division time of 15 minutes.
Culture Y starts with 64 bacteria and has a mean division time of 30 minutes.
After 2 hours, which culture contains more bacteria, and by how many?
culture X, by 256 bacteria
culture X, by 768 bacteria
culture Y, by 256 bacteria
culture Y, by 768 bacteria
163 exam-style questions on AQA GCSE Biology 1.1 Cell structure, covering 1.1.1 Eukaryotes and prokaryotes, 1.1.2 Animal and plant cells, 1.1.3 Cell specialisation, 1.1.4 Cell differentiation, 1.1.5 Microscopy, and 1.1.6 Culturing microorganisms. Each one has a worked solution and a mark scheme showing where the marks go.