Cambridge IGCSE Biology, topic 15
Drugs
A drug is any substance taken into the body that changes the chemical reactions in the body. This topic looks at antibiotics, the drugs used to treat bacterial infections, and at how resistant bacteria such as MRSA arise and how careful use of antibiotics can limit them.
Revision notes
Worksheet
FlashcardsSubtopics
Work through them in order. Each one has notes, exam questions and flashcards, and a PDF of each.
- 1Drugs Spec 15.1What a drug is, how antibiotics treat bacterial infections but not viruses, and how overuse of antibiotics leads to resistant bacteria such as MRSA.NotesQuestions 7Flashcards 8
Whole topic
When you have done the subtopics: test yourself on everything, or print the lot.