Streptococcus sp.

Question 1

all Strep sp. are catalase-_____

Answer 1

negative

Question 2

S. pyogenes - protein F functions

Answer 2

mediates epithelial cell attachment

Question 3

S. pyogenes - protein M function

Answer 3

blocks opsonization, evades phagocytosis

Question 4

S. pyogenes - streptolysin function

Answer 4

causes beta-hemolysis

Question 5

streptolysin that works in oxygen

Answer 5

streptolysin S

Question 6

streptolysin inactivated by oxygen

Answer 6

streptolysin O

Question 7

sp. of strep that have a capsule

Answer 7

group A, group B, S. pneumoniae

Question 8

S. pyogenes is the #1 cause of _______ in children and young adults

Answer 8

pharyngitis

Question 9

3 complications from streptococcal infection

Answer 9

streptococcal toxic shock syndrome, post-streptococcal acute rheumatic fever, post-streptococcal acute glomerular nephritis

Question 10

invasive S. agalactiae infections in newborns

Answer 10

pneumonia or meningitis w/ bacteremia

Question 11

IgA protease function

Answer 11

prevents opsonization by IgA

Question 12

pneumolysin O function

Answer 12

cytolytic, accounts for alpha-hemolysis

Question 13

S. pneumoniae enzymes

Answer 13

IgA protease, pneumolysin O, neuraminidase, hyaluronidase

Question 14

S. pneumoniae is the #1 etiologic agent of

Answer 14

lobar pneumonia in adults & sickle cell disease; otitis media; adult meningitis

Question 15

Viridans strep are the most common cause of

Answer 15

subacute bacterial endocarditis

Question 16

Enterococcus causes 5 - 10% of _________

Answer 16

bacterial endocarditis