9700/12 Biology Oct Nov 2022 Online Test | Cambridge AS and A Level MCQ
Substances called furanocoumarins are found in some fruits, where they act as inhibitors of the enzyme CYP3A4. This enzyme is needed to break down toxins in the human digestive system, so dangerous levels of these toxins may develop if these fruits are eaten.
What does this information suggest about molecules of the enzyme CYP3A4?