KINE 1020 Chapter Notes - Chapter 18: Oxidative Phosphorylation, Nicotinamide Adenine Dinucleotide, Endergonic Reaction
28 Jan 2016
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Document Summary
Energy metabolism and bioenergetics is the flow of energy in a biological system resulting in the ability to do work, produce heat. An important concept in bioenergetics is that energy cant be destroyed or created, it merely changes form: the body chemical energy is converted to thermal (heat) and mechanical (work) energy via chemical reactions. There are 2 main types of chemical reactions: exergonic reactions: energy-releasing reactions (negative (-) deltag, endergonic reactions: energy-consuming reactions (positive (+) deltag) G refers to the net energy in the system that is able to do work. Enzymes can be categorized by the substrate that results. Breakdown of atp to adp and pi. Biological energy systems are broken down into 3 main types: phosphagen system, glycolysis, oxidative-phosphorylation. All three energy systems produce atp at differing capacities. The relative contribution of each system is related to the intensity and work rate of the activity and is secondarily related to the duration of the activity.
