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27 Cards in this Set
- Front
- Back
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Define Metabolism
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total of all chemical reactions
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Two types of metabolic reactions
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Anabolic & Catabolic
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Define Catabolic Reaction
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breaks down molecules to make energy
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Define Anabolic Reaction
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Uses energy to build molecules
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Define Free Energy
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Energy available to do work
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∆G
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free energy
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∆H
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enthalpy
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∆S
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entropy
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Define entropy
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spontaneous reactions favor disorder
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Name 2 things that increase entropy
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catabolic reactions and diffusion
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What type of energy is random
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heat
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Energy conversion is always 100% efficient true or false
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false
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2nd law of thermodynamics
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every energy transformation increases entropy of universe
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Positive ∆G
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unfavorable
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Negative ∆G
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favorable
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Loss of free energy results in which two things
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Cell is unable to maintain order and cell death
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In biological systems, if the reaction isn't favorable...
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the reaction won't happen
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Exergonic reactions
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energy is released // catabolic
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Endergonic
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energy required // anabolic
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What is energy coupling
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The use of energy released from a favorable reaction to drive an unfavorable reaction.
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Favorable reaction used in energy coupling
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Hydrolosis of ATP
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ATP Hydrolosis equation
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ATP+H20 --> ADP+Pi+Energy
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What do enzymes do?
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lower activation energy needed to start a reaction
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What two things affect enzyme activity?
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Temperature and pH
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What do inhibitors do?
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Decrease enzyme function
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Two types of inhibitors
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Competitive and non competitive
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What is an irreverisble inhibitor called
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Posion
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