Bacillus Anthracis

Question 1

what colour does bacillus anthracis stained with polychromatic methylene blue

Answer 1

it stains pink because of the Macfadyen reaction

Question 2

describe bacillus anthracis

size, gram, aerobic/anaerobic, shape

Answer 2

large gram positive rods, endospore forming, aerobic or facultative anaerobes, form square ended chains

Question 3

what do the capital of bacillus anthracis contain

Answer 3

polymers of d glutamic acid

Question 4

what are the clinical signs of anthrax

Answer 4

bloat, splenomegaly, bleeding from orifices, incomplete rigor mortis

Question 5

describe the pathogenesis of bacillus anthracis

Answer 5

• ingest/inhale spore
• germination/spread to lymph nodes
• to blood
• kills neutrophils and macrophages
• septic shock and death

Question 6

what is required for the virulence

Answer 6

toxin and capsule