Anaerobes

Question 1

Brick red fluorescence

Answer 1

Prevotella
Porphyromonas

Question 2

Red fluorescence

Answer 2

Veilonella

Question 3

Pitting of agar

Answer 3

Bacteroides ureolyticus

Question 4

Double zone of hemolysis

Answer 4

Clostridium perfringens

Question 5

Swarming; Assacharolytic

Answer 5

Clostridium tetani
Clostridium septicum

Question 6

Molar tooth colonies; sulfur granules

Answer 6

Actinomyces israelii

Question 7

Breadcrumb colony

Answer 7

Fusobacterium nucleatum

Question 8

Horse manure odor

Answer 8

Clostridium difficile

Question 9

Infects brain, face, lungs, genitals

Answer 9

Actinomyces

Question 10

Ingestion of toxin in inadequately cooked or improperly canned foods.

Answer 10

C. botulinum

Question 11

Infant botulism due to

Answer 11

ingestion of spores in honey

Question 12

Causes lumpy jaw

Answer 12

Actinomyces bovis

Question 13

Fungus like bacteria

Answer 13

Actinomyces

Question 14

1 blood culture contaminant

Answer 14

Propionibacterium acnes

Question 15

Antibiotic-associated diarrhea, pseudomembranous colitis

Answer 15

C. difficile

Question 16

Yellow ground-glass colonies on cycloserine cefoxitin fructose agar (CCFA). Usually not cultured. Must demonstrate toxin production. Toxins A & B. Tissue culture or EIA.

Answer 16

C. difficile

Question 17

Normal in GI tract. Causes gas gangrene, food poisoning

Answer 17

C. perfringens

Question 18

“Box cars.” Tendency to stain gram neg. Usually no spores seen.

Answer 18

C. perfringens

Question 19

Most commonly isolated Clostridium. Double zone of beta hemolysis on SBA.

Answer 19

C. perfringens

Question 20

Causes tetanus. Deep wounds infected with soil

Answer 20

C. tetani

Question 21

Swollen terminal spores. “Drumstick.” “Tennis racquet.” Becomes gram neg after 24 hr.

Answer 21

C. tetani

Question 22

Produces lactic acid, maintains vaginal pH. Absence in vagina predisposes to bacterial vaginosis & yeast infections

Answer 22

Lactobacillus