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.
Summary. 1  Aerobic and anaerobic are adjectives used in reference to organisms, cellular respiration and physical exercises. 2  Aerobic pertains to ârequiring airâ, while anaerobic means âwithout airâ. 3  Aerobic organisms can live and grow in the presence of oxygen, while anaerobic ones donât necessarily require it to survive. Aerobic respiration uses oxygen as the final electron acceptor in the generation of energy in the form of ATP. 2  In anaerobic respiration, an inorganic acceptor such as sulfur is utilized. 3  Aerobic metabolism is 19 times more efficient than anaerobic.