Bacterial growth and nutrition

Question 1

Gyrase in bacteria

Answer 1

Needed to successfully complete DNA replication; target of antibiotics

Question 2

Ribosomes in bacteria

Answer 2

Have the same role as eukaryotic ribosomes, but function differently

Question 3

How is transcription and translation different in bacteria?

Answer 3

They are all done together right next to the DNA; no separate compartments

Question 4

Peptidoglycan synthesis

Answer 4

Synthesized first as subunits in the cytoplasm then transferred across the membrane by a carrier molecule. Cross-linked to the already present peptidoglycan

Question 5

Polymixins

Answer 5

Targets the cell membrane

Question 6

How does knowledge of metabolism provide useful understanding of bacterial pathogenesis and its treatment?

Answer 6

Knowing its requirements for energy determine its preferred environment and can predict where infection will occur.
Can recognize pathogens by their preferred environment.
Can determine antibiotics based on metabolic features

Question 7

Siderophores

Answer 7

Molecules that leave the bacterium to sequester iron and bring it back to the cell

Question 8

What does adding H2O2 to a wound do?

Answer 8

Overwhelms the bacterial cells undergoing aerobic respiration since they already have a lot a free radicals in the cell