A level Biology 10.1 Infectious diseases – Exam style question – Paper 1

Question

Which of the following increases the risk of contracting cholera?

1 drinking unpasteurised milk
2 eating shellfish which have fed on raw sewage
3 living in overcrowded conditions

A 2 only
B 1 and 2
C 1 and 3
D 2 and 3

Answer/Explanation

Answer     A

The correct that the answer is A, “2 only,” because the consumption of shellfish that have fed on raw sewage is a known risk factor for cholera, while drinking unpasteurized milk is not. Overcrowded conditions can increase the risk of exposure to contaminated water and food, but it is not a direct cause of cholera.

Question

What could cause an outbreak of malaria in a country where it had been eliminated?

  1. mosquitoes became resistant to insecticides
  2. migration of population due to war
  3. malarial parasites became resistant to quinine

A 1 and 2 only               B 1 and 3 only                C 2 and 3 only                D 1, 2 and 3

Answer/Explanation

Ans:

D

The correct that the answer is D, “1, 2, and 3,” because all of the factors listed can contribute to an outbreak of malaria in a country where it had been eliminated. The development of insecticide resistance in mosquitoes, the emergence of drug-resistant malarial parasites, and the migration of populations due to war can all increase the risk of the disease spreading.

Question

Which is correct for TB, measles and malaria?

Answer/Explanation

Ans:

A

Question

What do the causative agents of HIV/AIDS, malaria and TB have in common?

Answer/Explanation

Ans:

D

Question

Which row is correct for malaria?

▶️Answer/Explanation

Ans:

A

Malaria is an acute infectious illness caused by Plasmodium parasites, which are spread to people through the bites of infected female Anopheles mosquitoes. 
 
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