A dreidel is a four-sided spinning top with a Hebrew letter on each side. It is used during Hanukkah to play a popular children's game that involves spinning the dreidel and betting on which Hebrew letter will be showing when the dreidel stops spinning.
The capsule is not synthesized by the closest relatives of B. anthracis, i.e., B. cereus and B. thuringiensis, and this criterion can be used to distinguish the species. Cell Walls The variability of cell wall structure that is common in many Gram-positive bacteria does not occur in the genus Bacillus. few species, such as Bacillus megaterium, require no organic growth factors; others may require amino acids, B-vitamins, or both. The majority are mesophiles, with temperature optima between 30 and 45 degrees, but some are thermophiles with optima as high as 65 degrees.
The difference in morphology of cocci and bacilli lies in shape of the bacterium. Cocci and bacilli differ in their shape. Cocci are spherical in shape: whereas bacilli are rod-shaped. Cocci are usually aflagellate, i.e. lacking flagella. Bacilli may be aflagellate or flagellate. The number and position of flagella differ in different bacillus forms. Both cocci and bacilli may occur singly or in aggregation of two or more and termed accordingly.