Three statements about cholera and its transmission are listed. 1 The pathogen causes watery faeces. 2 Frequent air flight has led to mobile populations. 3 The pathogen is transmitted through water. Which statements are reasons why outbreaks of cholera are likely to occur?

1, 2 and 3

1 and 2 only

1 and 3 only

2 and 3 only

Biology

IGCSE&ALevel

CAIE

Exam No：9700_w24_qp_11 Year：2024 Question No：38

Answer:

Knowledge points:

10.1.1 state that infectious diseases are caused by pathogens and are transmissible

10.1.2.1 cholera – caused by the bacterium Vibrio cholerae

10.1.2.2 malaria – caused by the protoctists Plasmodium falciparum, Plasmodium malariae, Plasmodium ovale and Plasmodium vivax

10.1.2.3 tuberculosis (TB) – caused by the bacteria Mycobacterium tuberculosis and Mycobacterium bovis

10.1.2.4 HIV/AIDS – caused by the human immunodeficiency virus (HIV)

10.1.3 explain how cholera, malaria, TB and HIV are transmitted

10.1.4 discuss the biological, social and economic factors that need to be considered in the prevention and control of cholera, malaria, TB and HIV (details of the life cycle of the malarial parasite are not expected)

Three statements about cholera and its transmission are listed. 1 The pathogen causes watery faeces. 2 Frequent air flight has led to mobile populations. 3 The pathogen is transmitted through water. Which statements are reasons why outbreaks of cholera are likely to occur?

Answer:

Knowledge points:

Solution:

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