Human insulin used to treat people with diabetes is produced by genetically modified bacteria. Which statement describes how this is done?
Insulin is taken from the pancreas of a pig, then purified before it is used
A gene from a bacterium is put into a human cell, which then makes insulin
Bacteria are treated with a mutagen until one of them starts to make insulin
The human insulin gene is put into a bacterium, which is then cultured
42 exam-style questions on AQA GCSE Biology 7.5 Food production, covering 7.5.1 Factors affecting food security, 7.5.2 Farming techniques, 7.5.3 Sustainable fisheries, and 7.5.4 Role of biotechnology. Each one has a worked solution and a mark scheme showing where the marks go.