Is Bacillus subtilis coagulase positive or negative?
Description. Bacillus subtilis is a Gram-positive bacterium, rod-shaped and catalase-positive.
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].
What is the colony morphology of Bacillus?
Bacillus anthracis — Colony Characteristics Colonies are nonhemolytic, flat or slightly convex with irregular edges and ground-glass appearance. There are often comma shaped projections from the colony edge producing a “Medusa-head” colony. Colonies have a sticky consistency when manipulated with a loop.
What is the principle of methyl red test?
In the methyl red test (MR test), the test bacteria is grown in a broth medium containing glucose. If the bacteria has the ability to utilise glucose with production of a stable acid, the colour of the methyl red changes from yellow to red, when added into the broth culture.
Is Bacillus subtilis a colonial?
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)
Is Bacillus subtilis catalase positive?
Bacillus subtilis (B. subtilis) is a Gram-positive, aerobic bacterium. It is rod-shaped and catalase-positive.
What is the morphology and arrangement of Bacillus subtilis?
Bacillus subtilis morphology describes rod-shaped, Gram-positive bacteria that show up on both positive and negative Gram stain techniques. A bacterial rod is a symmetrical cylinder with rounded ends. A significant difference in pressure across the cytoplasmic membrane pushes the cell wall into a specific shape.