What is b. subtilis under microscope?

Bacillus subtilis (b. subtilis) is a Gram-positive, rod-shaped bacterium that can be observed under a light microscope. It typically appears as elongated cells of about 0.5-1.0 micrometers in diameter and 4-10 micrometers in length.

Under a microscope, b. subtilis typically stain purple or blue in Gram staining, which signifies its thick peptidoglycan layer in the cell wall. In addition, the bacteria may exhibit motility through the use of peritrichous flagella that extend from the cell body.

B. subtilis is generally considered a non-pathogenic microorganism that can be found in soil, water, and some foods. It is used extensively for industrial and biotechnological purposes, such as producing enzymes and antibiotics, as well as a model organism for genetic research.