Respiration (breathing) changes the amount of oxygen and carbon dioxide in the lungs
Oxygen turns respiration into aerobic respiration, which is a more efficient process that produces more energy compared to anaerobic respiration. In aerobic respiration, oxygen acts as the final electron acceptor in the electron transport chain, leading to the production of a larger amount of ATP.
The two types of respiration are aerobic respiration, which requires oxygen and yields a large amount of energy in the form of ATP, and anaerobic respiration, which does not require oxygen and yields a smaller amount of energy. Anaerobic respiration can occur in the absence of oxygen, such as during intense exercise, but is not as efficient as aerobic respiration.
Aerobic respiration uses oxygen to produce a large number of ATP molecules, which are used in the cell as energy. Anaerobic respiration used an electron transport chain without oxygen, produces lactic acid, and produces very little ATP and, as such, very little energy.
respiration
Aerobic respiration requires oxygen; anaerobic respiration does not use oxygen.
The amount of oxygen in the atmosphere directly affects the rate and efficiency of respiration in living organisms. Reduced oxygen levels can lead to decreased respiration and cellular energy production, resulting in physiological stress and potential harm to the organism. Conversely, sufficient oxygen enables efficient respiration, supporting metabolic processes and overall health.
cellular respiration uses oxygen but fermentation does not use oxygen
Cells use anaerobic respiration, specifically fermentation, to release energy from glucose when oxygen is not available. This process involves breaking down glucose into smaller molecules without the use of oxygen to produce a limited amount of energy.
Effective cellular respiration releases a large amount of energy (ATP). In order for effective cellular respiration to occur, oxygen must be present in the second stage of cellular respiration, the Krebs Cycle. If after the first stage of cellular respiration, glycolysis, there is no oxygen present, then ineffective cellular respiration occurs and the process is carried out by fermentation. Fermentation is an anaerobic process that results in the formation of ethyl alcohol or lactic acid and the cycle produces a net ATP gain of 2, whereas the net ATP gain of effective cellular respiration is 36 ATP molecules. Therefore cellular respiration in the presence of oxygen deals out a large amount of energy, but if not in the presence of oxygen, it deals out a small amount of energy.
Glycolysis is the only step in cell respiration that is not oxygen-dependent. It takes place in the cytoplasm and does not require oxygen to convert glucose into pyruvate, generating a small amount of ATP in the process.
Most of autotrophic plants get major amount of oxygen from photosynthesis. During night, when there is no photosynthesis, oxygen by plants is obtained from air However, the amount of oxygen released during photosynthesis by plants is manifold of their requirement for respiration.