B2 Revision Questions For Chapter

Question 1

What is a pathogen?

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Question 2

What is meant by the incubation period of a pathogen?

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Question 3

Give an example of a disease that is spread through the air.

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Question 4

Describe how the skin acts as a defence against pathogens.

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Question 5

What are platelets?

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Question 6

Give an example of a chemical defence against pathogens found in humans.

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Question 7

How do white blood cells recognise specific pathogens?

Answer 7

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Question 8

Explain why isolating infected individuals can help to prevent the spread of disease.

Answer 8

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Question 9

Give one method for preventing the transition of HIV.

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Question 10

Give one benefit and one cost of using biological control to prevent the spread of a disease in a crop.

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Question 11

Give one potential risk of using variations as a way of protecting people from disease.

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Question 12

Describe one way in which plant pathologists might identify a plant disease in the field.

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Question 13

Explain how a plant disease may be identified using isolation and reinfection.

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Question 14

There are ways in which you can make sure an experiment testing the effect of antibiotics does not become contaminated. Give three ways.

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Question 15

How can you use monoclonal antibodies to detect a particular pathogen?

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Question 16

How can monoclonal antibodies be used to trigger an immune response against cancer cells?

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Question 17

What is meant by a risk factor for a non-communicable disease?

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Question 18

Apart from lifestyle factors, give an example of a risk factor that might be associated with a non-communicable disease.

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Question 19

Give one non-communicable disease which may be associated with smoking.

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Question 20

What is meant by a positive correlation?

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Question 21

Briefly describe how you could investigate the effect of exercise on pulse rate.

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Question 22

What do antiviral drugs do?

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Question 23

Give an example of a surgical procedure which can help to treat cardiovascular disease.

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Question 24

How can genome sequencing help in the discovery of new drugs?

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