COMM1020 Chapter Notes - Chapter 3: Nicotinamide Adenine Dinucleotide, Glycolysis
30 Jan 2014
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Atp: used to phosphorylate molecules and thereby change their chemical reactivity and thus functionality in. Phosphorylation of one group (breakdown), activates them while phosphorylation of the others (synthesis) inactivates them. The primary way is by oxidative phosphorylation- oxygen needs to be present. That involves a long sequential process in which fuel molecules such as glucose and fatty acids are oxidized to carbon dioxide and water and numerous atp molecules are generated. A less efficient process that can provide some atps, is by substrate level phosphorylation. This does not require the presence of oxygen. When cell is overworked and oxygen is almost not present it is in oxygen debt. Presence of oxygen is aerobic , no oxygen is anaerobic exercise. This process alone would not suffice to maintain a cell for long (a few min perhaps) C6h12o6 + 6o2 -----> 6co2 + 6h2o + e in cells e = 30 - 32 atp (used to be 36)
