Evidence for evolution:Resistant Bacteria

• What should you be able to describe by the end of the video?

  How bacteria become resistant to antibiotics
• Why do bacteria evolve rapidly?

  They can reproduce every 30 minutes
• What antibiotic was first used to treat bacterial diseases in the 1940s?

  Penicillin
• What happens to bacteria when antibiotics are used?

  Most bacteria are killed, except resistant ones
• What is a common strain of antibiotic-resistant bacteria called?

  Mosa
• How does antibiotic resistance develop in bacteria?

  Through genetic variation and mutations
• What happens to the population of antibiotic-resistant bacteria over time?

  It rises due to lack of competition
• What are three ways to reduce antibiotic resistance?

  • Avoid inappropriate antibiotic prescriptions
  • Complete the full course of antibiotics
  • Restrict antibiotic use in farming
• Why should antibiotics not be prescribed for viral infections?

  Antibiotics have no effect on viruses
• What is the importance of completing a course of antibiotics?

  It ensures all bacteria are killed
• What is a challenge in developing new antibiotics?

  It takes a long time and is expensive
• Why is it unlikely to keep up with antibiotic-resistant bacteria?

  New resistant bacteria emerge constantly
• What can you find in the revision workbook related to antibiotic resistance?

  • Plenty of questions on antibiotic resistance
  • Additional resources for studying
  • Practice exercises for exam preparation