Bacteria and Antibiotics

Question 1

what are the 5 different bacterial classifications?

Answer 1

cocci, bacilli, spirilla, vibrios, spirochaetes

Question 2

what colour gram staining doe gram negative stain?

Answer 2

red-pink

Question 3

what is the morphology of a gram negative bacteria?

Answer 3

Surrounded by a thin peptidoglycan cell wall, which itself is surrounded by an outer membrane containing liposaccharide.

Question 4

what is the morphology of a gram negative bacteria?

Answer 4

Lack an outer membrane but are surrounded by layers of peptidoglycan much thicker than gram negative

Question 5

what colour gram staining dose gram negative stain?

Answer 5

blue-purple

Question 6

what are the different mechanisms of antibiotic action

Answer 6

Agents that inhibit cell wall synthesis
Depolarise the cell membrane
Inhibit protein synthesis (affecting the ribosomes)
Inhibit nuclei acid synthesis
Inhibit metabolic pathways in bacteria

Question 7

what are broad spectrum antibiotics

Answer 7

affects a wide range of bacteria

Question 8

what are examples of broad spectrum antibiotics

Answer 8

amoxicillin, gentamicin, ampicillin, doxycycline, quinolones

Question 9

what are narrow spectrum antibiotics?

Answer 9

affects only a few types of bacteria