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Exam 4
Ch 14- Principals of Disease and Epidemiology
10
Microbiology
Undergraduate 2
03/20/2012

Additional Microbiology Flashcards

 


 

Cards

Term
Pathogenesis
Definition
The manner in which a disease develops
Term
Saprophytic mycobacteria inhabit external genitals on secretions and/or sloughed-off cells, bringing no apparent benefit or harm to the host - What is this an example of?
Definition
Commensalism
Term
E.Coli gets nutrients from the large intestine while E.Coli synthesizes vitamin K and some vitamin B vitamins for the host. What is this an example of?
Definition
Mutualism
Term
VRSA (Vancomycin-resistant staphylococcus aureus)- uses up the hosts nutrients without providing the host any benefit in return. What is this an example of?
Definition
Parasitism
Term
Microbial antagonism
Definition
Protects host against colonization by pathogenic microbes by competing for nutrients, producing substances harmful to invading microbes and affecting conditions like pH and O2 availability.
Term
E.Coli produces bacteriocins that inhibit the growth of Salmonella and Shigella. What is this an example of?
Definition
Microbial antagonism
Term
The lactobacilli which colonies the vagina lower the pH of that environment thus making an inhospitable habitat to other microbes is an example of what?
Definition
Microbial antagonism
Term
Steps in Koch's postulates?
Definition
1. Isolate the pathogen (virus, microbe, etc) from sick creature.
2. Grow the pathogen in the lab and obtain a pure culture.
3. Inoculate a healthy creature with a sample from the pure culture. The pathogen should cause the same disease symptoms that were seen in the first creature.
4. Reisolate the same pathogen from the 2nd sick animal.
Term
Subclinical (inapparent) infection
Definition
Doesn't cause any noticeable illness
Term
Hepatitis A is an infection that doesn't seem to cause any noticeable illness. This is an example of?
Definition
Subclinical (inapparent) infection
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