Bacteria (names, characteristics)

Question 1

neisseria meningitidis

Answer 1

gram negative diplococcus,
can cause meningitis in otherwise healthy adults.
* has large polysaccharide capsule w/ MAJOR anti-phagocytic role
– MAC attack helps most to control these infections!

Question 2

Escheria Coli

Answer 2

gram-neg. bacillus (rod),
causes most UTIs from Auto-contamination (from GI tract!)
* most UTI-causing E. coli have flagella*

Question 2

Staphylococci (in general)

Answer 2

Gram + cocci, Catalase +

Question 3

Staphylococcus Aureus

Answer 3

Gram +, cocci; Catalase +, Coagulase +

Question 4

Streptococci (general)

Answer 4

Gram + cocci, catalase -

Question 5

streptococcus pneumoniae

Answer 5

Gram+ cocci, catalase -

alpha hemolysis and optochin sensitive

Question 6

Grp A streptococci

Answer 6

Gram+ cocci, catalase -

beta hemolysis and bacitracin sensitive

Question 7

Listeria

Answer 7

gram+ rod, aerobe

also: cornybacteria and bacillus spore

Question 8

Clostridium spore-producer

Answer 8

Gram+ rod, anaerobe

also: Propionibacterium and Bifidobacterium

Question 9

lactobacillus

Answer 9

Gram+ rod, aerotolerant anaerobe;

* part of normal flora in vagina –> protective layer

Question 10

Neisseria (general)

Answer 10

Gram- diplococci
(also: acinetobacter)
* oxidase + and grow on chocolate agar
Vir. factors: LOS capsule, pili, IgA protease, and Ag variation

Question 11

Enterobacteriacae

Answer 11

Gram- rods, facultative aerobe

Question 12

Pseudomonadacae

Answer 12

Gram- rods, aerobe

Question 13

Bacteroides

Answer 13

gram- rods, anaerobic

also: fusobacterium

Question 14

Legionella and bordatella

Answer 14

gram negative, rods

Question 16

Anaerobic bacteria

Answer 16

• often cause abcesses*
  gram - rods: Bacteroides fragilis, prevotella
  gram +: peptostreptococcus, clostridium