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17 Cards in this Set
- Front
- Back
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Do prokayote cells have a nucleus?
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No
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What is the most critical step in killing an infecting bacteria?
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Classifying the bacterium (organism)
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How can we use metabolism to ID a bacteria?
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By testing the growth on a particular medium we can tell what sugars the bacterium metabolizes to identify what type of bacteria it is.
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How is oxygen involved in IDing an organism?
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Learning about whether or not the bacterium requires oxygen to live can help identify the organism.
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What two pieces of information do you get from putting antibiotics in a petree dish with bacterium?
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A zone a clearing will appear if the AB killed the bacterium. So we will then know:
1. what AB kills that type of bacteria 2. diameter of the clearing to determine the strength of the AB |
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How do you test to see if a bacteria is anaerobic or aerobic?
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Place the bacteria in with oxydases after you ran a gram stain.
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Symbiotic relationship
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two species both benefit or are mutually dependant
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Example of symbiotes
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Human and E. Coli
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Commensal relationship
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only one of two species benefits but the other does not suffer
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Example of commensal species?
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Human and bacteriodes
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Parasitic relationship
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one species derives its nutrients from and at the expense of another organism
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VIP
What is the difference between an obliigative parasite and a facultative? |
In an obligative parasite the parasite requires the host to survive. And in a facultative the parasite does not require the host to survive.
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Compare strict/primary pathogens to opportunistic pathogens:
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Strict/primary pathogens are infective to healthy hosts while opportunistic are only infective to a host that is already compromised
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What causes the most deaths: Infectious disease?
Circulatory syst disease? Cancer? |
Infectious disease 33%
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Where are five preferred niches of bacteria where they actively proliferate?
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1. skin
2. upper respiratory tract (nose, oropharynx) 3. upper digestive tract (mouth and large intestine) 4. urinary tract 5. genital system |
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What are four regions of transitory proliferation of bacteria that is suggestive of disease?
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1. urinary system
2. uterus 3. rest of respiratory tract (other than mouth and oropharynx) 4. rest of GI tract (other than mouth and large intestine) |
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What four regions are normally sterile and if bacteria are found in there is a major problem?
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1. blood
2. cerebrospinal fluid 3. synovial fluid 3. deep tissues |
