Disease Defence

Question 0

How can antiseptics can be used to prevent the spread of infections?

Answer 0

Antiseptics are used to prevent bacteria from multiplying. It is usually used on cuts.

Question 1

Where can we get some of our antibiotics from?

Answer 1

Plants- plants do this to protect themselves from disease- humans take these chemicals from the plants so we can protect ourselves from disease.

Question 2

What is an antibacterial?

Answer 2

These prevent bacteria from multiplying. They cannot be ingested because they are toxic. We usually spread these on surfaces.

Question 3

What are antifungals used for?

Answer 3

These are used to kill fungi. These are usually liquidy substances.

Question 4

Why wouldn’t a doctor prescribe antibiotics for a cold?

Answer 4

It is a virus. Antibiotics are used to treat bacteria.

Question 5

When will doctors prescribe antibiotics?

Answer 5

If you have a bacteria caused by a bacteria.

Question 6

What is resistant Bacteria? Give an example.

Answer 6

Bacteria that has mutated that mean that they can take longer to treat the bacteria or it could mean that the antibiotics could stop working.
e.g. MRSA.

Question 7

How is resistant bacteria?

Answer 7

Bacteria multiplies
Copy's DNA
Mistakes made- mutations
Mutations- negative, neutral, positive
Possibly More resistant to antibiotics
Longer to kill
If you stop taking the antibiotics they survive
They reproduce 
Copy DNA
if this goes on for generations- the bacteria becomes more and more resistant

Question 8

What is a halo?

Answer 8

The circle around an antibiotic/antiseptic that is clear of bacteria. The bigger the halo the more effective it is.