Exam 1: Gram Positive Bacillus Flashcards
Large square - end gram + rods in chains
Bacillus
T/F Bacilli can be aerobes or facultative anaerobes
T
Are Bacillus Catalase + or -?
+
Are Bacillus oxidase + or -?
-
Are Bacillus motile or non-motile
Motile except B. anthracis
Where is bacillus found?
soil
T/F. Most Bacillus species are non-pathogenic environmental organisms
T
What is the most important species of Bacillus?
Bacillus anthracis
The most durable type of cell found in nature
Endospores
T/F. Endospores are produced extracellularly
F. produced intracellularly and excreted extra.
What are the 2 major virulence factors of Bacillus anthracis?
- capsule
2. tripartie anthrax toxin
What is the Bacillus anthracis capsule made up of and what is its function?
polymers of D-glutamic acid, anti-phagocytic
What are the 3 proteins encoded on pXO1 for anthrax toxin?
- Protective antigen (PA)
- Edema factor (EF)
- Lethal Factor (LF)
Anthrax toxin protein thatis responsible for necrosis and hemorrhage
LF
Anthrax toxin protien responsible for edema
EF