Chpt8-powerpoint - ATP Click to edit Master subtitle style...

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Click to edit Master subtitle style 2/13/10 ATP
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2/13/10 Cells and Work What types of work do cells perform? Cells perform 3 main kinds of work Chemical work Transport work M echanical work What is the ability to do work? How do cells make and store
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2/13/10 ATP ATP : adenosine triphosphate; the energy currency of cells ATP Str ucture: Adenine Ribose Phosphate groups
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2/13/10 ATP
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2/13/10 ATP ATP contains 3 high energy phosphate bonds that release considerable energy when they are broken ATP + H2O → ADP + Pi G = -7.3 kcal/mol (-30.5 kJ/mol)
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2/13/10 ATP Hydrolysis
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2/13/10 ATP Powers Cellular Work So ATP gives of energy when it is broken down, how do cells utilize that energy Cells manage their energy resources by “energy coupling” Energy Coupling : the use of exergonic processes to drive endergonic processes
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2/13/10 How ATP Performs Work When ATP is hydrolyzed in a test tube the energy that is given off is mainly
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Chpt8-powerpoint - ATP Click to edit Master subtitle style...

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