Isolated thunderstorms are when there are either thunderstorms present at the current time or there is a change for them to form, but they are scattered. These usually occur in the afternoon and the evening when the sun is out at its peak and heats up the atmoshpere.
For example, bacteria from the genus Salmonella are mostly facultative anaerobes, oxidase-negative, catalase-positive and gramnegative rods. Most strains are motile and ferment glucose with production of both acid and gas.
â¢ Staphylococcus possesses catalase enzyme; hence it gives a positive result (except the species called Staphylococcus aureus) in catalase test, unlike the Streptococcus. â¢ About 50 Streptococcal species and 40 staphylococcal species have been identified so far. Read more: 1. Difference Between Aerobic and Anaerobic Bacteria. 2.