1. Using drugs to treat diseases

2. Medicines, are they all the same?

3. Compare and contrast

4. Applied to living tissue to prevent growth of microorganisms
Antibiotics
Applied to living tissue to prevent growth of microorganisms
Disinfectants
Prevents the growth of bacteria inside living tissue – doesn’t work on viruses
Antiseptics
Applied to non-living materials to kill microbes and prevent their growth

5. Alexander Fleming

6. Explain in the same order you described.
Penicillin is produced by a fungus
Fungus likes sugar to multiple
Penicillin kills bacteria
Penicillin is a secondary metabolite
produced under stress.
Think!
Why does the fungus produce a chemical that kills off bacteria when they are running out of sugar?
Describe the graph
(hint: start with sugar and fungal biomass lines, then describe the penicillin concentration)
Explain the graph
Explain in the same order you described.