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19 Cards in this Set
- Front
- Back
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Anaerobic |
Not requiring oxygen, or capable of occurring in the absence of oxygen |
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Anoxic |
lacking oxygen; not oxygenated, devoid of oxygen |
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Aerobic |
requiring oxygen (for respiration) |
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Chemotroph: |
organism that obtains energy through the chemical process (not photosynthesis) (organisms that cannot make their own food) |
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Chemolithotroph (aka Chemoautotroph) |
Self-feeder ENERGY SOURCE is: Inorganic compound CARBON SOURCE: CO2 -light, if photoautotroph -inorganic chemical if chemoautotroph
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Chemoorganotroph (aka chemoheterotrophs) |
-Feeds on other things (can't make its own food) -energy source: chemical (organic compounds ) (example, glucose) Carbon source: Organic compounds Examples - us, bacteria, fungi, protozoa |
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Obligate |
NEEDS / requires |
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Facultative |
not restrictive -capable of existing to more than one set of conditions / behaviors |
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Describe the energy requirements of anaerobic chemolithotrophs and give an example of one. |
Chemolithotroph = chemoAUTOtroph Energy Source: inorganic chemical Carbon Source: CO2 Examples: -nitrogen-fixing bacteria in soil -iron-oxidizing bacteria in lava beds -sulfur-oxidizing bacteria in deep sea thermal vents |
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chemolithotrophs utilize _____________ _____________. An example of chemoorganotrophs is: |
inorganic compounds yeast |
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Describe the energy requirements of Anaerobic Chemoorganotrophs and give an example of a species and describe their morphology. (Chemoorganotroph = chemoheterotroph) |
Energy Source: chemical Carbon Source: organic compound Ex. Slime molds, fungi, protozoa, bacteria, us |
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What are some diseases that are caused by Clostridium? |
1. Tetanus 2. Botulism 3. Gas gangrene |
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Lactic Acid bacteria are important in fermentation of many food products. Does this make them anaerobic or aerobic? |
ANAEROBES (but can grow in the presence of O2 as "aerotolerant anaerobes".) |
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How would you classify cyanobacteria in regards to its metabolism? |
oxygenic photosynthesizer (have gas vesicles that create buoyancy) |
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What two organisms are the most common nosocomial infections? |
1. Pseudomonas aeruginosa 2. Serratia marcescens (also Enterobacter) |
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Discuss some Obligate Aerobes and the problems they cause |
?? |
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Which organism can withstand lots of x-rays? |
•Deinococcus radiodurans (more resistant to radiation than endospores) |
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Corynebacterium is Gram Positive pleomorphic rod and is a facultative anaerobe. (Pleomorphic = alter their shape or size in response to environmental conditions.) Would it survive in oxygen? |
Yes |
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In which Family would you find E. coli, Salmonella enteric and Shigella? What problems can these three typically cause? |
Enterobacteriaceae Gastro-intestinal problems (diarrhea) |
