IGCSE Biology
2026 - 2028
Syllabus Checklist
Topic 15: Drugs
Describe a drug
as any substance taken into the body that modifies or affects chemical reactions
in the body.
Describe the use of antibiotics
for the treatment of bacterial infections
.
State that some bacteria
are resistant
to antibiotics, which reduces their effectiveness.
State that antibiotics
kill bacteria
but do not affect viruses
.
Explain how using antibiotics only when essential
can limit the development of resistant bacteria
such as MRSA
.
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