Trypanosomes (Trypanosoma brucei) are protozoans that cause African sleeping sickness in humans - HSC - SSCE Biology - Question 8 - 2020 - Paper 1
Question 8
Trypanosomes (Trypanosoma brucei) are protozoans that cause African sleeping sickness in humans. The diagram shows the way that the disease is transmitted to humans.... show full transcript
Worked Solution & Example Answer:Trypanosomes (Trypanosoma brucei) are protozoans that cause African sleeping sickness in humans - HSC - SSCE Biology - Question 8 - 2020 - Paper 1
Step 1
Identify the pathogen
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Answer
The disease-causing organism is the Trypanosome, specifically Trypanosoma brucei.
Step 2
Identify the vector
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Answer
The insect that transmits the disease is the Tsetse fly.
Step 3
Identify the method of disease transmission
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Answer
The method of disease transmission is direct, as the Tsetse fly bites the cow and then subsequently bites the human.
Step 4
Select the correct row
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Answer
The correct answer that identifies the pathogen, vector, and method of disease transmission is option C: Trypanosomes, Tsetse fly, Direct.
