Fighting disease using drugs
- Painkillers reduce symptoms - don't kill it.
- Antibiotics kill bacteria.
- Don't destroy viruses.
- Difficult to develop drugs to destroy viruses without damaging cells.
Bacteria can mutate (changing their DNA) to become resistant to an antibiotic. This creates a resistant strain of bacteria.
Growing Microorganisms in labs
- grown in petri dish in agar jelly
- inoculating loop transfers microorganism onto jelly
- these multiply
- paper discs contain different types of antibiotics
- Inoculating loop, work place and petri dish sterilised using bleach or using bunsen burner to kill any microrganisms already on.
- Lid open slightly so oxygen can pass through for the reaction
- At school over 25 degrees harmful pathogens grown, industrial faster reaction at high temperatures.
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