In computational complexity theory, a problem refers to the abstract question to be solved. In contrast, an instance of this problem is a rather concrete utterance, which can serve as the input for a decision problem. For example, consider the problem of primality testing.
Oxygen plays a vital role in both the aerobic and anaerobic metabolic systems. While oxygen is required as a direct energy source in the aerobic system, it is also essential in clearing the blood of excess lactic acid buildup in the anaerobic system.
Individual human cells are also facultative anaerobes: They switch to lactic acid fermentation if oxygen is not available. Summary: 1. Aerobic bacteria inhales oxygen to remain alive. 2. Anaerobic bacteria dies in the presence of oxygen, and therefore avoids O2.3. Aerobic respiration produces energy with the help of a complex process in the cells. 4. Anaerobic respiration produces crystals, and causes pain in muscled areas.5.ndividual human cells are also facultative anaerobes: They switch to lactic acid fermentation if oxygen is not available. Summary: 1. Aerobic bacteria inhales oxygen to remain alive. 2. Anaerobic bacteria dies in the presence of oxygen, and therefore avoids O2.