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Endergonic reaction

Campbell Biology Chapter 8

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? 2017 Pearson Education, Inc. Lecture Presentations byNicole Tunbridge and Kathleen Fitzpatrick Chapter 8An Introduction to Metabolism 1 The Energy of Life The living cell is a miniature chemical factory where thousands of reactions occur Cellular respiration extracts energy stored in sugars and other fuels Cells apply this energy to perform work Some organisms even convert energy to light, as in bioluminescence ? 2017 Pearson Education, Inc. 2 Concept 8.1: An organism?s metabolism transforms matter and energy, subject to the laws of thermodynamics Metabolism is the totality of an organism?s chemical reactions Metabolism is an emergent property of life that arises from orderly interactions between molecules ? 2017 Pearson Education, Inc. Enzyme 1 Reaction 1 Starting molecule

5.1: Energy and World of Life Notes

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Kavya Immanni Mrs.Rothfuss Honors Biology I / 3B 2, February 2017 5:1 Energy and the World of Life Notes I. Energy Disperses A. First law of thermodynamics:? Energy cannot be created or destroyed B. Energy can be converted into different forms C. Potential energy:? capacity to cause change because of where an object is located or how parts are arranged 1. Example: ATP has P.E. because of the chemical bonds that hold its atoms in certain arrangements. In muscle cells, the chemical energy of ATP is transferred to myosin. ATP is converted to kinetic energy D. Kinetic Energy: ?energy of motion E. Energy tends to disperse spontaneously, each form of energy disperses until no part of a system holds more energy than it
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