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Unformatted text preview: Unit 2 Exam Review - Chapter 6 Energy Flow in the Life of a Cell o Kinetic Energy The energy of movement o Potential Energy Stored energy which includes chemical energy stored in the bonds that hold atoms together in molecules, electrical energy stored in a battery and positional energy o Laws of Thermodynamics First Law of Thermodynamics • Energy can neither be created or destroyed by ordinary processes, it can only change form. Second Law of Thermodynamics • When energy is converted from one form to another, the amount of useful energy decreases. o Endergonic and Exergonic Reactions Endergonic Reactions • A reaction that requires a net input of energy o Products contain more energy than the reactants Exergonic Reactions • A reaction that releases energy o Reactants contain more energy than the products. o Metabolism The metabolism of a cell is the sum of all its chemical reactions o Metabolic Pathway Molecules are both synthesized and broken down in metabolic pathways •...
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- Spring '10
- Cellular Respiration, electrical energy, Reactions Endergonic Reactions