Topic 3 B

Question 1

Features of your body which stop pathogens (3)

Answer 1

Skin acts as barrier

Hair and mucus trap particles in nose

Trachea and Bronchi have mucus to trap pathogens. They are lined with cilia which waft the mucus up to the back of the throat

Stomach produces hydrochloric acid

Question 2

What are the 3 things White blood cells do to destroy pathogens

Answer 2

Consume them

Produce antibodies

Produce Antitoxins

Question 3

How does vaccination work (3)

Answer 3

Inject a dead or inactive pathogen into body

Carry antigens causing body to produce antibodies to attack them

If the same type of pathogen appear after that, White blood cells can rapidly mass produce antibodies to kill it

Question 4

Pros of vaccination

Answer 4

Control communicable diseases

Epidemics can be prevented if a lot of people are vaccinated

Question 5

Cons of vaccination

Answer 5

Sometimes don’t work

Can have bad reaction

Question 6

What do pain killers do

Answer 6

Relieve the pain

Question 7

What do antibodies ( penicillin) do

Answer 7

Kill the bacteria

Question 8

How can bacteria become resistant to antibiotics

Answer 8

Mutations of bacteria can be resistant to the antibiotic

Question 9

How to slow down the rate of development of resistant strains of diseases

Answer 9

Avoid oversubscribing antibiotics

Finish whole course of antibiotics

Question 10

Which painkiller is developed from a chemical in willow

Answer 10

Aspirin

Question 11

Which drug used to treat heart disease
Is developed from chemical in foxgloves

Answer 11

Digitalis

Question 12

3 stages of drug testing

Answer 12

Tested on human cells and tissues

Test on live animals

Tested on human volunteers