Lecture 6: Microbial Metabolic Diversity (COHT) Flashcards
1
Q
Cystic fibrosis
A
Genetic disorder when the lungs and the digestive system are clogged with mucus
2
Q
Coliform
A
- When bacteria ferments lactose
- Indicator of fecal contamination
3
Q
Sulfer-reducing bacteria
A
- Gram negative and anaerobic
- oxidize acetate into carbon
- uses elemental sulfur as electron acceptor
- makes hydrogen sulfide
- Part of sulfur cycle
- inhabit mud flats
4
Q
Endospores
A
- Created by bacteria when undergoing stress by no resources
- Resistant to high temps, low energy radiation, disinfectants, drying
- Dormant and nonreproductive
5
Q
Aerobic chemoorganoheterotrophs (COHT)
A
- Carry out glycolysis, pyruvate oxidation, CAC, oxidative phosphorylation
- Final electron acceptor is oxygen
6
Q
Micrococcus
A
- Bacteria
- Gram positive cocci
- Live on surfaces
- Mostly harmless
- Aerobic COHT
7
Q
Mycobacterium
A
- Bacteria
- Acid fast rods
- Live on surface and in water
- Some saprophytes
- Medical: M. tuberculosis
- Aerobic COHT
8
Q
Saprophyte
A
Microorganism living on dead/decaying organic matter
9
Q
Pseudomonas EX P. aeruginosa
A
- Bacteria
- Gram negative rods
- Live on surface and water
- Breakdown oil and substances
- Bioremediation EX oil spills
- Opportunistic pathogen
- Produce pyocyanin (green pigment)
10
Q
Opportunistic pathogen
A
- creates disease in weakened individual
11
Q
Facultative anaerobes COHT
A
- Breakdown using common 4 pathway with oxygen
- Breakdown using glycolysis then fermentation without oxygen
12
Q
Enterobacteriaceae (Group) EX Escherichia, Shigella, Salmonella (Genus)
A
- Bacteria
- Gram negative rods
- inhabit intestine and soil
- Normal flora but also pathogens
- Can ferment lactose
- F Anaerobic COHT
13
Q
Anaerobic COHT
A
- Final electron acceptor is something other than oxygen
14
Q
How sludges are produced
A
Fe + H2S + H2O -> FeS + H2 + H2O
15
Q
Obligate fermenters COHT
A
- No electron transport chain
- Use only glycolysis then fermentation pathway
- anaerobic
