差异een Aerobic Respiration and Anaerobic Respiration

有氧呼吸与厌氧呼吸

呼吸is generally the formation of energy in the form of adenosine triphosphate (ATP) by burning food with oxygen, but there is another type of respiration taking place in the absence of oxygen called anaerobic respiration. There are many differences between these two main types of respiration including the biochemical pathways as well as the volume of energy produced.

有氧呼吸是什么?

根据该定义，有氧呼吸是发生在生物体细胞内部的一组事件，可以在存在氧气的情况下燃烧食物来产生ATP。ATP是将能量存储在单元内的最佳形式。在整个有氧呼吸过程中，将二氧化碳形成为废品。糖（葡萄糖），氨基酸和脂肪酸是呼吸中高度消耗的呼吸底物之一。有氧呼吸过程使用氧作为最终电子受体。呼吸的整个过程涉及四个主要步骤，称为糖酵解，丙酮酸的氧化脱羧，柠檬酸循环（克雷布斯循环）和氧化磷酸化。进行所有过程后，将有一个由一个葡萄糖分子产生的38个ATP分子（C₆H₁₂O₆). However, due to leaky membranes and efforts spent in moving some molecules during the process, the net production limits to around 30 ATP molecules from one glucose molecule. The magnitude of this pathway is enormous; there are trillions of ATP molecules produced through aerobic respiration at all the innumerable number of cells in the body, and a huge amount of oxygen is demanded while the same amount of carbon dioxide is produced. All these demands and productions are sustained through external respiration of inhale and exhale with the facilitation of the circulatory system to transport both oxygen and carbon dioxide up and down.

什么是厌氧呼吸？

呼吸is important to gain energy; however, not all the places in the world has oxygen, and that demands the organisms to adapt with different techniques in order to live in such environments. Anaerobic respiration is one such methods of extracting energy from organic materials using other chemicals viz. sulphate or nitrate compounds as the final electron acceptor in the process. Additionally, these terminal electron acceptors are less efficient in their reduction potentials and could only produce a couple of ATP molecules per glucose molecule. Usually, the waste products are sulphides, nitrites, or methane and those are unpleasant smells for humans and most other animals. Lactic acid is another waste generated through the anaerobic respiration. It is interesting to know that anaerobic respiration could take place in human bodies as well, especially when there is a high demand of oxygen to operate rapid muscle movements. In such cases, lactic acid is produced, and that causes muscle cramps. Anaerobic respiration is synonymous with fermentation, especially in the glycolytic pathway, but ethanol and carbon dioxide is formed as waste products in fermentation.

有什么区别Aerobic Respiration and Anaerobic Respiration? • Oxygen is involved in the aerobic respiration but not in anaerobic respiration. •有氧呼吸中的能量产量效率要高于厌氧呼吸。 • Among organisms, aerobic respiration is more common than anaerobic respiration. • The waste products are different according to the type of terminal electron acceptor in anaerobic respiration, whereas carbon dioxide is the main waste in aerobic respiration. • Aerobic respiration helps to maintain the atmospheric oxygen level while anaerobic respiration aids to maintain the carbon cycle, nitrogen cycle, and many others.