A new drug passed preclinical testing but was withdrawn during clinical trials. Which of these is the most likely reason for withdrawing the drug?
The drug was found to be too expensive for the company to make
The drug was found to work on cells grown in the laboratory only
The drug was found to be harmful to the healthy volunteers taking it
The drug was found to have been extracted from a plant, not synthesised
176 exam-style questions on AQA GCSE Biology 3.1 Communicable diseases, covering 3.1.1 Communicable (infectious) diseases, 3.1.2 Viral diseases, 3.1.3 Bacterial diseases, 3.1.4 Fungal diseases, 3.1.5 Protist diseases, 3.1.6 Human defence systems, 3.1.7 Vaccination, 3.1.8 Antibiotics and painkillers, and 3.1.9 Discovery and development of drugs. Each one has a worked solution and a mark scheme showing where the marks go.