bacteria 8

Question 1

preference of bacteria for particular locations in the body

Answer 1

1. surface colonization

Question 2

______ on bacterium
______ on host cells

Answer 2

adhesins on bacterium and receptors on host cells

Question 3

in this bacteria for surface colonization,
1. bacterial proteins on tips of pili interact with glycolipids/glycoproteins on host epithelial cells

2. bacterial proteins at the cell surface interact with their own translocated intimin receptor (TIR)=
   (for E.COLI bacteria!!)

Answer 3

gram-negative bacteria

intimins

Question 4

in this bacteria for surface colonization,
it often binds host fibronectin which binds integrins

Answer 4

gram positive (staphyloccus)

Question 5

give example of molecule on human cell that is recognized and bound by SRRP for gram positive bacteria for surface colonization

Answer 5

sialic acid

Question 6

what is a mechanism that pathogenic bacteria use to envade host immune system defenses?

Answer 6

addition of sialic acid to LPS

Question 7

gram negative bacteria often bind to host cells by

Answer 7

bacterial fimbriae proteins interacting with host cell glycolipids

Question 8

what blocks access of the membrane attack complex to the bacterial plasma membrane

Answer 8

function of LPS on bacterial cells

Question 9

this cleaves the complement component into inactive fragments

Answer 9

C3b peptidase

Question 10

*****what is the effect of collagenases when they are toxins encoded by pathogenic bacteria

Answer 10

they degrade collagen and allow bacteria to enter host cell or penetrate host tissues