BIOLOGY 2A03 Lecture Notes - Lecture 2: Glycolysis, Glycogen, Mitochondrial Matrix
24 Jan 2018
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Document Summary
Cellular energy metabolism (moyes and schulte chapter 3) Energy exists as kinetic energy, potential energy or both. In biological systems, energy can be grouped into several categories. Radiant energy - heat loss from our bodies, photo reception. Mechanical energy - ability to sense touch or pressure of our blood, locomotion. Thermal energy - generating heat by shivering, brown fat creates thermal energy, raise temp for a fever. Chemical energy - energy stored in the bonds between molecules. Most biological processes involve a transfer of energy from one form to another, some of which occurs via chemical reactions. Metabolism: the sum of all chemical reactions in a cell. Principles of chemical equilibrium dictate directions of reversible reactions and nal concentrations of reactants and products. The rates of chemical reactions depend on the activation energy (as well as temperature and reactant/ product concentration) Activation energy is the energy needed to pass through the transition state.
