What is cell metabolism?
cell metabolism is a general term covering all chemical reactions that convert energy or use energy inside the cell. People's cells and many other multicellular organisms use the aerobic breathing process to convert food into energy. Plants and some microorganisms perform the process of photosynthesis. Other organisms use anaerobic breathing or fermentation, types of cellular metabolism that do not require oxygen. Catabolic reactions produce energy for the use of cells, while anabolic reactions require energy to create molecules that are necessary to continue the functioning of the cell. Cells deposit energy in the form of adenosine triposphate (ATP), which is created by catabolic reactions and is used by anabolic reactions. First, the glycolysis process breaks the glucose molecule - sugar with six carbon atoms - into two pyruvate molecules, two molecules of reduced nicotinamide adenin dinucleotide (NADH) and two ATP molecules. Crike's cycle, also called a cycle of citric acid(CAC) or the cycle of tricarboxylic acid (TCA), further decomposes pyruvates created during glycolysis into carbon dioxide and water and creates two more molecules in the process. The mechanism called the electron transport string transmits hydrogen atoms from overpower to oxygen. This transmission releases the energy that is used to create another 34 molecules, etc.
Glycolysis and the Creb cycle take place in the same way in anaerobic breathing as in aerobic breathing. However, in the electron transport chain, inorganic molecules - molecules that do not contain carbon - are used as an electron acceptor instead of oxygen. Type used by inorganic molecules depends on the body. For example, some organisms use sulfur -containing compounds and some use nitrogen -containing compounds. Anaerobic respiration produces a total of 36 molecules, etc., unlike 38 for aerobic breathing.
fermentation is another form of anaerobic metabolIsm, but unlike anaerobic breathing, the chain of electrons transport or the Creb cycle does not include the chain of electrons. Glycolysis decomposes organic molecules to create energy. Because glycolysis is the only reaction that takes place in fermentation, it only produces two ATP molecules on the glucose molecule.
plants and some microorganisms, which are all classified as photoautotrophs, gain their energy from the form of cellular metabolism called photosynthesis rather than breathing. Photoautotrophs gain energy from light and convert it into chemical energy in the form of etc. Cells then use ATP to convert carbon dioxide to glucose and other nutrients that orgapity of nism.