GASEOUS ATMOSPHERE Flashcards
(26 cards)
21% O2
Obligate Aerobe
Does not grow with CO2
Can tolerate only 0.03% of CO2
Obligate Aerobe
Obligate Aerobe enzymes:
catalase, Superoxide dismutase (SOD)
Obligate Aerobe organisms:
-Mycobacterium tuberculosis
-Micrococcus spp.
-Pseudomonas aeruginosa
-Brucella
-Francisella
Requires 85% nitrogen.
Prefer 5% of O2 at low concentration.
Microaerophile
5-10% CO2
Microaerophile
Microaerophile enzyme:
No catalase and SOD
Microaerophile organisms:
Helicobacter pylari
Campylobacter jejuni
Neisseria gonorrhea
May grow with or without 0-21% O2
Facultative anaerobe
May grow with or without CO2
Facultative anaerobe
Facultative anaerobe enzyme:
catalase, Superoxide dismutase (SOD)
Facultative anaerobe ORGANISMS:
-Enterobacteriaceae
-Staphylococcus aureus
-Most PATHOGENIC bacteria are Facultative anaerobe
Grows better without it, but can survive the presence of O2
Aerotolerant anaerobe
Grows better with the presence of CO2
Aerotolerant anaerobe
Aerotolerant anaerobe enzymes:
no catalase and superoxidase dismutase
Aerotolerant anaerobe ORGANISMS:
-Lactobacillus
-Propionibacterium
0% O2
requires 80-90% Nitrogen
requires 5-10% Hydrogen
Obligate Anaerobe
5-10% CO2
Obligate Anaerobe
Obligate Anaerobe ENZYMES:
No catalase and superoxide dismutase
Obligate Anaerobe ORGANISMS:
Clostridia spp.
Actinomyces
Veilonella
Does not require O2
Capnophiles
Neisseria
Campylobacter
Helicobacter
Haemophilus influenzae
organisms that require increased concentration of CO2 (5-10% CO2)
Capnophiles
Capnophiles ENZYMES:
NO enzymes
