What is the morphology of Bacillus anthracis?
Morphology: B. anthracis is a gram positive, non-motile, rectangular, aerobic, rod-shaped bacterium with square ends, measuring about 1µ x 3-5µ. Chain formation is common.
What is Medusa’s appearance?
A fanciful descriptor for a structure with undulating or serpentine lines radiating from a central mass.
What is the colony morphology of Bacillus subtilis?
Bacillus subtilis is a typical germ, which is rod-shaped and Gram-positive. When cultured on ordinary nutrient agar, the morphology circular colony of this bacteria is rough, opaque, fuzzy white or slightly yellow with jagged edges [1, 7].
Is Bacillus anthracis a capsule?
The capsule of Bacillus anthracis, composed of poly-D-glutamic acid, serves as one of the principal virulence factors during anthrax infection. By virtue of its negative charge, the capsule is purported to inhibit host defence through inhibition of phagocytosis of the vegetative cells by macrophages.
Which disease is caused by Bacillus anthracis?
Anthrax is a serious infectious disease caused by gram-positive, rod-shaped bacteria known as Bacillus anthracis.
What is the function of Bacillus anthracis?
Bacillus anthracis is an aerobic, spore-forming, gram-positive bacterium (139). Spores are the causative agent of anthrax, an infectious disease that is fatal to mammalian species (68). Herbivores are frequent hosts, ingesting spores that contaminate the environment (140).
What does the Medusa head mean?
What does the head of Medusa symbolize? The symbolism associated with Medusa’s head includes the idea that it can ward off evil. She was beheaded by Perseus, who is praised in Ancient Greek mythology for his bravery and courage.
What does a Medusa tattoo mean?
Medusa tattoos are also interpreted as a feminist symbol. Medusa’s visage has been adopted by many women as a symbol of female rage, and used as a map to guide women through their terrors, through the depths of their anger into the sources of their power as women.
What are the 5 basic categories of colony morphology?
Terms in this set (6)
- 5 basic categories of colony morphology. shape. margin. elevations.
- Shape (3) Can be circular, irregular, or punctiform (tiny)
- Margin (5) (FiLeR) entire (smooth with no irregularities)
- Elevation (5) (PURFC) flat.
- Texture (3) mucoid (use loop) moist- wet.
- Pigment (2) color. density (opaque or clear)
Where is Bacillus subtilis bacteria found?
soil
subtilis) is a Gram-positive, aerobic bacterium. It is rod-shaped and catalase-positive. B. subtilis is found in soil and the gastrointestinal tract of ruminants and humans.
Is Bacillus anthracis a virus or bacteria?
Anthrax is a serious infectious disease caused by gram-positive, rod-shaped bacteria known as Bacillus anthracis. Anthrax can be found naturally in soil and commonly affects domestic and wild animals around the world.
Where can Bacillus anthracis be found?
Bacillus anthracis: The bacterium that causes anthrax. Anthrax differs from most bacteria in that they exist in an inactive (dormant) state called spores. The spores are found in soil, animal carcasses and feces (including sheep, goats, cattle, bison, horses, and deer), and animal products (e.g., hides and wool).
What causes the Medusa to have a head?
Cleavage of the progenitor toxin into A and B fragments can be induced artificially by trypsin. Medusa head appearance of the colonies may be due to. 1) Proteus mirabilis. 2) Bacillus anthracis. 3) Pseudomonas aeruginosa.
What kind of glass is Medusa head made of?
Non-hemolytic, non-pigmented, dry ground glass surface, edge irregular with comma projections, “ Medusa Head ”. Gram-positive, spore-forming rods.
What kind of animal is a medusa jellyfish?
medusa jellyfish; a colony of animals comprising a bell from which hang a number of filaments and tentacles. Called also hydromedusa. colonies of Bacillus anthracis on agar have this appearance of being domes with a fringe of filaments.
Where does the word Medousa come from in English?
[Middle English Meduse, from Latin Medūsa, from Greek Medousa, from feminine present participle of medein, to protect, rule over; see med- in Indo-European roots .]