GENERAL BIOLOGY BIOL 1001
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This 4 page Class Notes was uploaded by Charles Kohler on Tuesday October 13, 2015. The Class Notes belongs to BIOL 1001 at Louisiana State University taught by Christopher Gregg in Fall. Since its upload, it has received 16 views. For similar materials see /class/222823/biol-1001-louisiana-state-university in Biological Sciences at Louisiana State University.
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Date Created: 10/13/15
9212009 64000 PM Chapter 6 Energy o Energy the capacity to do work o Kinetic energy energy of movement 0 Light 0 Heat 0 Electricity o Potential energy stored energy 0 Chemical energy 0 Positional energy o Laws of Thermodynamics o 1 Conservation of Energy amount of energy in a closed system remains constant 0 2 When converted from one form to another useful energy decreases entropy increases o How energy flows in chemical reactions 0 Chemical reaction forming and or breaking chemical bonds among atoms Reactantse starting materials Productse result of the reaction 0 Exergonic reactions Energy released into the environment Metabolism o Sum of all reactions in the cell 0 Exergonic Endergonic Metabolism o Metabolic pathway 0 A series of reactions linked in a sequence o How is it controlled 0 Enzymes regulate chemical reactions 0 Cells couple reactions 0 Energy carriers capture energy from exergonic reactions amp deliver to endergonic reactions o Catalysts 0 Speed up chemical reactions but aren t consumed by the reaction itself o Enzymes are biological catalysts Usually proteins A few enzymes are RNA 0 5 properties of biological catalysts Speed up reactions Speed up reactions that would occur anyway but slower All Catal Not consumed in the reactions Enzymes are very specific Enzyme activity is regulated Enzymes only o Enzyme regulation 0 O O O O Regulate synthesis Make them inactive activate when needed Feedback inhibition Allosteric inhibition Competitive inhibition 9212009 64000 PM 9212009 64000 PM
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