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Microbiology > Lecture 6: Microbial Metabolic Diversity (COHT) > Flashcards

Lecture 6: Microbial Metabolic Diversity (COHT) Flashcards

(18 cards)

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1
Q

Cystic fibrosis

A

Genetic disorder when the lungs and the digestive system are clogged with mucus

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2
Q

Coliform

A
  • When bacteria ferments lactose

- Indicator of fecal contamination

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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
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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
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5
Q

Aerobic chemoorganoheterotrophs (COHT)

A
  • Carry out glycolysis, pyruvate oxidation, CAC, oxidative phosphorylation
  • Final electron acceptor is oxygen
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6
Q

Micrococcus

A
  • Bacteria
  • Gram positive cocci
  • Live on surfaces
  • Mostly harmless
  • Aerobic COHT
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7
Q

Mycobacterium

A
  • Bacteria
  • Acid fast rods
  • Live on surface and in water
  • Some saprophytes
  • Medical: M. tuberculosis
  • Aerobic COHT
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8
Q

Saprophyte

A

Microorganism living on dead/decaying organic matter

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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)
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10
Q

Opportunistic pathogen

A
  • creates disease in weakened individual
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11
Q

Facultative anaerobes COHT

A
  • Breakdown using common 4 pathway with oxygen

- Breakdown using glycolysis then fermentation without oxygen

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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
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13
Q

Anaerobic COHT

A
  • Final electron acceptor is something other than oxygen
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14
Q

How sludges are produced

A

Fe + H2S + H2O -> FeS + H2 + H2O

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15
Q

Obligate fermenters COHT

A
  • No electron transport chain
  • Use only glycolysis then fermentation pathway
  • anaerobic
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16
Q

Clostridium EX C. Tetani

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A
  • Bacteria
  • Gram positive rods and endospore producers
  • Inhabit soil and intestinal tract
  • Anaerobic obligate fermenters
17
Q

Lactic acid bacteria EX (genus) Lactobacillus, Step throat, Streptococcus pneumonia

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A
  • Bacteria
  • Gram positive or cocci
  • Located in vaginal lining, yogurt
  • Obligate fermenters
18
Q

Propionibacterium

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A
  • Bacteria
  • Gram positive rods
  • Inhabit anaerobic environments such as skin flora
  • Produce propionic acid and CO2
  • Breakdown sugars in milk (lactose) through fermentation
  • Obligate fermenters

Microbiology (10 decks)

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