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CAIE IGCSE Biology 15 Drugs Questions

Review drug definitions, medicinal use of antibiotics, antibiotic resistance and effects of alcohol and performance-enhancing drugs.

Syllabus
2026–2028
Course
Biology 0610

Covered syllabus points

15.1 Drugs

Question 1

[Maximum number: 2]

Heroin is a drug that acts on the nervous system.

Define the term drug.

Question 2

[Maximum number: 1]

Fig. 4.1 is a diagram of the human female reproductive system.

Fig. 4.1

Fig. 4.1

Chlamydia is caused by a bacterium.

Suggest a treatment for chlamydia.

Question 3

[Maximum number: 1]

Why is an MRSA infection difficult to treat?

A

MRSA is a bacterium.

B

MRSA is a virus.

C

MRSA is resistant to some antibiotics.

D

MRSA is resistant to some antibodies.

Question 4

[Maximum number: 2]

Penicillin is an antibiotic produced by the fungus Penicillium chrysogenum.

Fig. 5.1 shows the process used to produce penicillin.

Fig. 5.1 shows the process used to produce penicillin.

Explain why antibiotics, such as penicillin, affect bacteria but not viruses.

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