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CAIE A-Level Biology AS 10.1 Infectious Diseases Questions

Practise infectious-disease questions by matching pathogens to cholera, malaria, TB and HIV, tracing transmission routes and judging control measures.

Syllabus
2028–2030
Course
Biology 9700
Level
AS

Exam points

  • Identify pathogen types and named causes of cholera, malaria, TB and HIV/AIDS.
  • Trace faecal-oral cholera, mosquito-borne malaria, droplet TB and bodily-fluid HIV transmission.
  • Select disease-specific controls, linking sanitation to cholera and vector control to malaria.
  • Discuss biological, social and economic barriers to controlling infectious disease.

Covered syllabus points

10.1.1—Pathogens and infectious disease10.1.2—Examples of infectious diseases10.1.3—Transmission of cholera, malaria, TB, HIV10.1.4—Prevention and control

Question 1

[Maximum number: 1]

Which statement correctly describes infectious diseases?

A

They are diseases caused by environmental factors that are not passed from one person to another.

B

They are diseases caused by a fault in the DNA that can be passed from a parent to their offspring.

C

They are diseases caused by a lack of a nutrient in the diet, such as a vitamin or mineral.

D

They are diseases caused by a pathogen such as a bacterium, fungus, protoctist or virus.

Question 2

[Maximum number: 1]

Which disease does Mycobacterium bovis cause?

A

cholera

B

HIV/AIDS

C

malaria

D

tuberculosis

Question 3

[Maximum number: 1]

Which facts relate to the disease TB or its pathogen?
1 Viruses change their antigens to a limited extent.
2 TB is caused by only one species of pathogen.
3 HIV/AIDS makes the bacterial infection worse.
4 The pathogen may be transmitted by ingestion.
5 The pathogen may be transmitted from animals.
6 Multi-drug resistance occurs.

A

1,4,5 and 6

B

1, 2 and 6

C

2, 3 and 5

D

3, 4, 5 and 6

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