what is oxidation in biology
Oxidation is the loss of electrons, addition of oxygen, or loss of hydrogen. This process also happens in biological systems. This process yields energy that is used to drive metabolic reactions. When light hits the assembly of chlorophyll molecules we call as photosystems, we call it photoxidation, as the energy is used to kick out electrons (oxidation), with high energy. These high energy electrons are used to reduce NADP+ to NADPH (reduction). In the dark reaction NADPH is oxidised to make high-energy carbohydrates.
These high energy carbohydrates are broken down via respiration. During this these compounds are broken down by several oxidation reactions. Each carries the high energy electrons to reduce NAD+ to NADH. This NADH then is subsquentlly oxidised on the inner membrane of mitochondria and they energy released pumps Hydrogen ion in the intermembrane space. This chemical gradient is used to make ATP, the energy currency of the cell.
FAQ
What is oxidation simple definition?
Oxidation is defined as the loss of electrons, negative species, hydrogen or addition to oxygen. Many biochemical reactions are redox reactions. They carry oxidation of some species and reduction of others.
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