Antibiotics

Question 1

What are broad spectrum antibiotics

Answer 1

Affect many different bacteria

Question 2

What are narrow spectrum antibiotics

Answer 2

Affect a specific bacteria

Question 3

What are bactericidal antibiotics

Answer 3

Kill bacteria

Question 4

What are bacteriostatic antibiotics

Answer 4

Prevent bacteria multiplying

Question 5

How does Penicillin V work

Answer 5

Diffuses though Gram + bacteria cell wall and through porins in gram - bacteria cell wall. Binds to PBP enzyme to inhibit it and prevents cross links in the peptidoglycan call wall allowing water to flood the cell causing lysis

Question 6

How does tetracycline work

Answer 6

Acts against Gram + and - bacteria and enters through diffusion and protein pumps
Inhibits protein synthesis by binding to ribosomes preventing tRNA attaching

Question 7

How does antibiotic resistance occur

Answer 7

Mutations make some bacteria immune to antibiotics allowing them to survive, meaning they reproduce and create a large population of immune individuals

Question 8

How can a resistance gene be given from one bacteria to another

Answer 8

Conjugation