B3 Infection and Response

Question 1

What are bacteria?

Answer 1

Bacteria are small cells that can reproduce very quickly in the body.

Question 2

What does bacteria produce?

Answer 2

They produce toxins that make you feel ill, damaging your cells and tissues.

Question 3

Which is smaller bacteria or viruses?

Answer 3

Viruses

Question 4

What are viruses?

Answer 4

Viruses live insideyour cell where they replicate. They
then burst out of the cell, releasing new viruses.

Question 5

Are protists eukaryotes?

Answer 5

Yes

Question 6

What do fungi produce?

Answer 6

They can produce spores
which can spread to other plants.

Question 7

Hwo are pathogens spread?

Answer 7

air, water and direct contact

Question 8

Name the four pathogens.

Answer 8

Fungi, viruses, bacteria and protists

Question 9

Give one reason on how you stop spread.

Answer 9

Being hygienic –
washing hands thoroughly.
Destroying vectors –
killing vectors by using insecticides or destroying their habitat.
Isolation –
isolating an infected person will prevent the spread.
Vaccination –
people cannot develop the infection and then pass it on.

Question 10

What are painkillers?

Answer 10

Painkillers relive the pain and
symptoms, but do not tackle
the cause.

Question 11

What are antibiotics?

Answer 11

Antibiotics kill the bacteria causing the problem, but do not work on viruses. Viruses are very difficult to kill because they live inside the body

Question 12

What is a placebo?

Answer 12

Placebo effect is when the patient thinks the treatment will work even though their treatment isn’t doing anything.

Question 13

What is blind trial?

Answer 13

Blind trial is when the patient does not know whether they are getting the drug or the placebo.