Memory Anchor:

• Super Challenge:

  Stretch:

  Challenge:

Key Questions:

1. Why can bacteria evolve rapidly?
   • Bacteria can evolve rapidly because they reproduce at a fast rate.
2. What are the stages of antibacterial resistance?
   • Stages of antibacterial resistance include: 1. Mutations of bacterial pathogens produce new strains. 2. Some strains might be resistant to antibiotics, and so are not killed. 3. They survive and reproduce, so the population of the resistant strain rises. 4. The resistant strain will then spread because people are not immune to it and there is no effective treatment.
3. What is the bacteria MRSA resistant to?
   • MRSA is resistant to antibiotics.
4. What should be done to reduce the rate of development of antibiotc resistant bacteria?
   • To reduce the rate of development of antibiotic resistant strains: ? doctors should not prescribe antibiotics inappropriately, such as treating non-serious or viral infections ? patients should complete their course of antibiotics so all bacteria are killed and none survive to mutate and form resistant strains ? the agricultural use of antibiotics should be restricted.
5. Why can't medical professionals just produce new antibiotics to fight resistant bacteria?
   • The development of new antibiotics is costly and slow. It is unlikely to keep up with the emergence of new resistant strains