Genetically modified bacteria produce a human medicine. The medicine has the same intended action as a version extracted from animals.
Which pair identifies a potential benefit and a separate issue that still needs investigation?
Less need to test each production batch; whether the medicine remains active during storage.
Less reliance on animal sources; whether the purified product contains harmful contaminants.
Less need to purify the product; whether the medicine can be made in sufficient quantities.
Less need to purify the product; whether the medicine can be sold at an affordable price.
44 exam-style questions on Edexcel GCSE Biology 4.3 Selective breeding and genetic modification, covering 4.3.1 Selective breeding and its impact, 4.3.2 Tissue culture, 4.3.3 Genetic engineering overview, 4.3.4 Main stages of genetic engineering, 4.3.5 Advantages and disadvantages of GM organisms, 4.3.6 Agricultural solutions for a growing population, and 4.3.7 Evaluating genetic engineering and breeding. Each one has a worked solution and a mark scheme showing where the marks go.