For each type of disease in the following table, name a specific disease and its cause - HSC - SSCE Biology - Question 22 - 2010 - Paper 1
Question 22
For each type of disease in the following table, name a specific disease and its cause.
Type of disease Name of disease Cause of disease
Infectious disease
Non-in... show full transcript
Worked Solution & Example Answer:For each type of disease in the following table, name a specific disease and its cause - HSC - SSCE Biology - Question 22 - 2010 - Paper 1
Step 1
For each type of disease, name a specific disease and its cause.
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Answer
Infectious Disease
Name of disease: Malaria
Cause of disease: Plasmodium parasite transmitted by mosquitoes.
Non-infectious Disease
Name of disease: Scurvy
Cause of disease: Lack of vitamin C.
Step 2
Explain how TWO different methods used to treat drinking water reduce the risk of infection.
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Answer
Method 1: Filtration
Explanation: Filtration removes larger particles, pathogens, and impurities from the water, which helps prevent waterborne diseases by ensuring that harmful microorganisms are physically separated from the drinking water.
Method 2: Chlorination
Explanation: Chlorination involves adding chlorine to drinking water in order to kill most bacteria and viruses. This method effectively disinfects the water, significantly reducing the risk of infections such as cholera.