06EnergyF10b

06EnergyF10b - BIOL 110 Energy Energy Energy is a term we...

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BIOL 110 Energy
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Energy Energy is a term we use a lot, but loosely To a biologist, energy is: Energy exists in two states: Potential energy Kinetic energy
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Energy states Potential energy : Will be used in future Kinetic energy : Is actively being used to bring about some transformation, alteration, or movement
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Forms of energy Biologically, energy can take many forms and be stored or used in many ways: Concentration gradients: dam, compressed air Mechanical: molecular motion All forms and states of energy in biology conform to the laws of thermodynamics
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Thermodynamics Thermodynamics : the study of the 1 st law : Energy can be converted and change form 2 nd law : Entropy = Energy transactions not 100% efficient
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Quantitative Expression Total energy = “Useful energy” = Entropy = T = absolute temperature (°C + 273) Total energy = usable + unusable H = G + T*S Can only measure changes so: H = G + T S G = H – T S
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06EnergyF10b - BIOL 110 Energy Energy Energy is a term we...

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