Body defence

Question 1

define normal microbiota

Answer 1

populations of microorganisms routinely found growing on the body of a healthy individual

Question 2

define resident flora

Answer 2

inhabit body sites for extended periods

Question 3

define transient flora

Answer 3

form associations for a short time and are replaced

Question 4

what are the 3 forms of symbiotic relationships?

Answer 4

mutualism
commensalism
parasitism

Question 5

define mutualism
example

Answer 5

association in which both partners benefit
humans and bacterial synthesis of vitamins K and B

Question 6

define commensalism
example

Answer 6

association in which one partner benefits and other is unharmed
microbiota living on human skin

Question 7

define parasitism
example

Answer 7

association in which the microbe benefits at expense of host
pathogenic infection

Question 8

define pathogenicity

Answer 8

the ability of species to produce disease

Question 9

define virulence

Answer 9

the ability of strains to produce disease

Question 10

define primary infection

Answer 10

initial infection with organism in host

Question 11

define refinfection

Answer 11

subsequent infection by the same organism in a host after recovery

Question 12

define superinfection

Answer 12

infection by same organism in a host before recovery