Unit 5 - Defence Against Disease

Question 1

How does the skin help defend the body from pathogens?

Answer 1

It is a barrier and produces antimicrobial secretions

Question 2

How does the nose help defend the body from pathogens?

Answer 2

It traps particles which could contain pathogens

Question 3

How does the stomach help defend the body from pathogens?

Answer 3

Produces acid which kills the majority of pathogens which enter through the mouth

Question 4

How do white blood cells help to defend against pathogens in the body?

Answer 4

• Phagocytosis
• Antibody Production
• Antitoxin Production

Question 5

What is phagocytosis?

Answer 5

The process in which a white blood cell engulfs a pathogen and destroys it

Question 6

What is a vaccine?

Answer 6

A small amount of dead or inactive pathogens into the body to trigger an immune response

Question 7

What is a placebo?

Answer 7

A fake, sugar drug

Question 8

When a new drug is discovered, what two phases must the drug go through?

Answer 8

• Pre Clinical Testing
• Clinical Testing

Question 9

During drug testing, what are scientists trying to find out?

Answer 9

• Toxicity
• Efficacy
• Dosage

Question 10

During pre-clinical trials, what is used to test the drug?

Answer 10

• Cells
• Tissues
• Live Animals