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17 Cards in this Set

  • Front
  • Back
Do prokayote cells have a nucleus?
What is the most critical step in killing an infecting bacteria?
Classifying the bacterium (organism)
How can we use metabolism to ID a bacteria?
By testing the growth on a particular medium we can tell what sugars the bacterium metabolizes to identify what type of bacteria it is.
How is oxygen involved in IDing an organism?
Learning about whether or not the bacterium requires oxygen to live can help identify the organism.
What two pieces of information do you get from putting antibiotics in a petree dish with bacterium?
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
How do you test to see if a bacteria is anaerobic or aerobic?
Place the bacteria in with oxydases after you ran a gram stain.
Symbiotic relationship
two species both benefit or are mutually dependant
Example of symbiotes
Human and E. Coli
Commensal relationship
only one of two species benefits but the other does not suffer
Example of commensal species?
Human and bacteriodes
Parasitic relationship
one species derives its nutrients from and at the expense of another organism

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.
Compare strict/primary pathogens to opportunistic pathogens:
Strict/primary pathogens are infective to healthy hosts while opportunistic are only infective to a host that is already compromised
What causes the most deaths: Infectious disease?
Circulatory syst disease?
Infectious disease 33%
Where are five preferred niches of bacteria where they actively proliferate?
1. skin
2. upper respiratory tract (nose, oropharynx)
3. upper digestive tract (mouth and large intestine)
4. urinary tract
5. genital system
What are four regions of transitory proliferation of bacteria that is suggestive of disease?
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)
What four regions are normally sterile and if bacteria are found in there is a major problem?
1. blood
2. cerebrospinal fluid
3. synovial fluid
3. deep tissues