A given genus may include several similar species, each with its own specific name. For instance the lynx belongs to the same genus as the domestic cat. There are five types of organisms in the kingdoms. I believe this is what we did in class with shells. Sorry, but ask me if you have no idea what I am talking about.
Prokaryotes are the most metabolically diverse organisms on Earth.
Potoautotrophs use light energy and chemoautotrophs use inorganic substances to synthesize their organic compounds from carbon dioxide. Photoheterotrophs require organic molecules for metabolic processes and synthesize ATP using light energy. Most bacteria are chemoheterotrophs, which require organic molecules as a source of both energy and organic carbon. The ability or inability to survive in the presence of oxygen also reflects variation in metabolism. Several groups of bacteria metabolize nitrogen compounds unavailable to other organisms.