Some raw chicken is left out in a warm kitchen. Which statement best explains why the number of bacteria on the chicken becomes very large in only a few hours?
The bacteria join together in pairs and exchange genetic material with each other
The bacteria change into a different species that is better suited to the chicken
The bacteria divide by binary fission as often as once every 20 minutes
The bacteria grow larger in size until they can be seen without a microscope
139 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.