UMMC Micro test2 6th
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What is it called when a non-pathogenic bacteria infects and replicates but does not cause harm?
What are the four parts of Koch’s postulates?
- All cases must have the organism and it is not in healthy people
- The organism must be grown in pure culture
- Must use pure culture to cause experimental infection
- Must isolate the organism In pure culture from experimentally infected animal
Define Incubation period
Time from acquisition of the organisms to the start of symptoms
Define prodromal period
the time during which there are non-specific symptoms, but can spread bug
Define Acute illness
when specific signs and symptoms of the disease are present
Define recovery period
the time during which the illness subsides and patient returns to health
What are hospital acquired infections?
What is a healthy person who has an exogenous pathogen living in his flora?
How does cranberry juice prevent UTI?
Cranberry juice has di-galactose which bacteria preferentially bind
What is the difference between LOS and LPS?
LOS has a shorter O side chain
What receptors does Endotoxin bind?
CD14 and TL4
Where is LPS located?
Part of the outer membrane
What are the three components of LPS?
- Lipid A
- core carbohydrate (KDO)
- O-side chain
What is the difference between smooth and rough gram negative bacteria?
Rough bacteria lack the O-side chain
What antigens are associated with LPS?
R and O antigens
What would you like to do?
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