Energy from Respiration is Essential for All Living Organisms

Breathing occurs in all living organisms, and in the process of mixing glucose from cells stored in various organisms from various organisms, oxygen produces carbon dioxide, water, energy (energy is not a substance). ) In the presence of glucose and oxygen → carbon dioxide, water and energy. This generated energy can then be used for basic life process and growth. In the case of plants, plant roots, photosynthetic algae and bacteria, the respiratory process starts with photosynthesis.

The term cell respiration means a biochemical pathway in which cells release energy from the chemical bonds of food molecules and provide energy to the basic process of life. All living cells must undergo cell respiration. You can do aerobic respiration in the presence of oxygen or anaerobic respiration. Procaryotes undergo cellular respiration in the cytoplasm or on the inner surface of cells. Here more emphasis will be placed on eukaryotic cells where mitochondria are the sites of most reactions. The energy currency of these cells is ATP, and one way to observe the results of cell respiration is as a production process for ATP.

Cell respiration and fermentation produce the energy used by the cells. The chemical process that generates energy is called catabolic pathway. For almost all organisms on the earth (except for chemical nutrients), this energy is stored in organic molecules. Cells release the energy of their organic molecules by breaking them. Through respiration and fermentation of the cells, these bonds are destroyed and release the potential energy of the organic molecules to the kinetic energy used for the cells to function. ATP consists of adenosine and three phosphate groups (triphosphate). ATP is an unstable molecule in water, in which it is hydrolyzed to ADP and phosphate. This is because the bond strength between the phosphate groups in ATP is smaller than the hydrogen bond strength between the product (ADP + phosphate) and water. Therefore, when ATP and ADP are in chemical equilibrium in water, almost all ATP is finally converted to ADP.

Living organisms catabolize organic molecules in cells and phosphorylate ADP using the released energy to produce ATP. Many prokaryotes and almost all eukaryotes phosphorylate ADP by fermentation (anaerobic) or respiration (aerobic). Both methods involve the oxidation of food, but only the latter requires oxygen. to understand? Do not think so. Cell respiration is a very complicated process involving many steps occurring within a cell, called mitochondria. Mitochondria plays a role in converting digested nutrients to energy producing molecules, adenosine triphosphate (ATP), to promote cellular activity. This function, called aerobic respiration, is why mitochondria are often called cell power plants. Two kinds of respiration occur in the cell, and energy is generated. When there is oxygen in the cell, the above-mentioned aerobic respiration occurs.