Question 35
FIn 1928 Alexander Fleming was growing bacteria on agar plates. He noticed that one of his plates had become contaminated with a mould. The figure shows what Fleming saw.
Figure: A culture plate showing bacteria growing on agar and a clear area around a colony of mould
a.[1]
Describe what the figure shows about the growth of the bacteria near the mould.
b.[2]
Explain what Fleming concluded from this observation.
c.[1]
Name the drug that was developed from this mould.
d.[2]
Most new drugs today are not discovered by chance in this way. Describe how most new drugs are produced today.
3.1 Communicable diseases Questions
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.