review1

Question 1

toxins

Answer 1

interfering host defenses either by direct damage or inactivating phagocytic cells

Question 2

A-B toxins

Answer 2

A- activity

B- binding

Question 3

type III or IV secretion systems

Answer 3

only gram negatives

Question 4

toll-like receptors do what?

Answer 4

activate phagocytic potential

Question 5

toxigenic syndromes(superantigens) in S.aureus:

1. scalded skin syndrome
2. toxic shock syndrome
3. acute food poisoning

Answer 5

1. scalded skin syndrome- exofoliative toxin
2. toxic shock syndrome- TSS toxin
3. acute food poisoning- staph, enterotoxin

Question 6

which of the strptococci has gamma-hemolysis

Answer 6

viridians

Question 7

in shigella the ID50 is

Answer 7

very low, we do not need a lot of bacteria to cause an infection

Question 8

organisms in the colon are more likely to cause bloody or watery diarrhea?

Answer 8

bloody

Question 9

abscess tend to be _________ hard to pinpoint origin of pathogenic organism

Answer 9

polymicrobial

Question 10

what subunit distinguishes between spastic and flaccid paralysis

Answer 10

Beta-subunit