Paper 1: How Pathogens Are Spread

Question 1

How is malaria spread?

Answer 1

Mosquito becomes infected with parasite when it takes a blood meal
Mosquito bites second person and spreads malaria
Infected mosquito bites a human and injects protists that cause malaria
Infected live cells
Infected red blood cells

Question 2

How is a hiv spread?

Answer 2

HIV enters the blood and reproduces inside white blood cells causing white blood cell destruction

Question 3

How can you reduce the spreading of cholera?

Answer 3

Boil water before drinking
Wash hands thoroughly after using toilet paper

Question 4

How can you reduce the spreading of tuberculosis?

Answer 4

Ventilate buildings
Diagnose infected people promptly
Isolate infected people

Question 5

How can you reduce the spreading of malaria?

Answer 5

Prevent mosquitos biting people - sleeping net

Question 6

How can you reduce the spreading of stomach ulcers?

Answer 6

Cook food thoroughly- to kill bacteria
Wash hand before preparing food

Question 7

How can you reduce the spreading of Ebola?

Answer 7

Isolate infected people
Wear fully protected clothing when working with infected people