EASY
AS and A Level
IMPORTANT
Earn 100

All viruses are parasites, but most bacteria are not. Explain why all viruses are parasites, but not all bacteria are parasitic.

Important Questions on Infectious Disease

MEDIUM
AS and A Level
IMPORTANT
Describe how cholera is transmitted from person to person. 
MEDIUM
AS and A Level
IMPORTANT
One person can excrete 1013 cholera bacteria a day. An infective dose is 106. How many people could one person infect in one day?
MEDIUM
AS and A Level
IMPORTANT
Explain why there is such a high risk of cholera following natural disasters such as earthquakes, hurricanes, typhoons and floods.
MEDIUM
AS and A Level
IMPORTANT
Describe the precautions that a visitor to a country where cholera is endemic can take to avoid catching the disease. 
MEDIUM
AS and A Level
IMPORTANT
Explain how the cells of Plasmodium differ from the red blood cells of the host. 
MEDIUM
AS and A Level
IMPORTANT
List the factors that make malaria a difficult disease to control.
MEDIUM
AS and A Level
IMPORTANT
Describe the precautions that people can take to avoid developing malaria.