Evidence for Evolution: Resistant Bacteria.

Question 1

What are antibiotics?

Answer 1

• Drugs that can kill bacteria.

- E.g: Penicillin.

Question 2

How does anti-biotic resistance happens?

Answer 2

• Bacteria may develop random mutations in their DNA which Change characteristics.
• Result in the bacteria being Resistance to antibiotics.
• The antibiotics kill most of the bacteria however the resistance ones survives.
• Resistant bacteria reproduces without competition from other bacteria and all these bacteria has the gene for antibiotic resistance.

ANTIBIOTIC RESISTANCE STRAIN.

Question 3

What happens if a new antibiotic is formed?

Answer 3

• Kill the Bacteria.
• Occasionally: some bacteria may gain resistance to the different type of antibiotic and will reproduce.
• This process repeats until bacteria is resistance to lots of different antibiotics.
• SUPERBUGS.
  E.g: MRSA.

Question 4

Is it uncommon for bacteria to form resistance?

Answer 4

Yes.
‘Partial Resistance’, only when they do.
By completing a complete course of antibiotics all bacteria can be killed.