KINE 1020 Lecture Notes - Lecture 29: Phosphocreatine, Endergonic Reaction, Catabolism
15 Jan 2017
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Chapter 18 energy metabolism & bio energetics january 11, 2017. Nutrients from ingested food are provided and stored as carbs, fats and proteins: these 3 fuels are (cid:498)substrates(cid:499) and can be broken down in cells to release stored energy. Metabolism is all the chemical reactions in the body. Thermodynamics energy neither created or destroyed types included heat, chemical, mechanical etc: exergonic reactions: energy releasing reactions, endergonic reactions: energy consuming reactions. Total of all catabolic / exergonic and anabolic / endergonic reactions in a system. Types of pathways: catabolic break down of larger molecules into smaller molecules, anabolic synthesis of larger molecules. Currency of life since all life forms depend on atp. Consists of three phosphate groups, ribose and adenine. Atp becomes adp to produce energy: releases chemical energy, heat, mechanical energy. Breaking glucose and fat down, energize the reforming of phosphate to atp. Make fat / glucose into atp is metabolism.
