O2 Requirements/Toxicity

Question 1

Require O2
Have no fermentative pathways
Generally produce superoxide dismutase
Group and Important genera?

Answer 1

Obligate aerobes:
Nocardia
Psuedomonas
Mycobacterium
(Bacillus)
Remember: Nagging Pests Must Breathe

Question 2

Require low but no full O2 tension

Answer 2

Microaerophilic:
Campylobacter
Helicobacter

Question 3

Will respire aerobically until O2 is depleted and then ferment
Group and Important genera?

Answer 3

Facultative anaerobes:

Most bacteria, ie Enterobacteriaceae

Question 4

Lack superoxide dismutase
Generally lack catalase
Are fermenters
Cannot use O2 as terminal electron acceptors
Group?

Answer 4

Obligate anaerobes:
C = Clostridium
B = Bacteroides
A = Actinomyces
Remember: Anerobes Can't Breath Air

Question 5

What are the obligate intracellular bugs?

Answer 5

Rickettsia, Chlamydia
Can’t make own ATP
Remember: Stay inside cells with it is Really Cold

Question 6

Some Nasty Bugs May Live FacultativeLY

Answer 6

Facultative Intracellular bugs:

Salmonella, Neisseria, Brucella, Mycobacterium, Listeria, Francisella, Legionella, Yersinia pestis