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7 Cards in this Set
- Front
- Back
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Internal energy of a protein |
E = U(potential) + U(kinetic) |
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What must be done to change the energy of a protein? |
Delta U = q + w Where q = heat = C(T(final) - T(initial)) Where C is the heat capacity. Which is the amount of energy required to raise the temperature of a sample by 1 degree Celsius |
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Define enthalpy of a protein.3 |
Delta H = delta E + PV With constant pressure and with no gas, the change in volume (V) = 0 This means that delta H = delta E Delta E = q + w Where q = heat = C Delta H = q |
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1st law of thermodynamics |
Energy cannot be created or destroyed just inter converted between forms |
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2nd law of thermodynamics |
The entropy of the universe is always increasing |
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3rd law of thermodynamics |
The entropy of a system approaches a constant as the temperature of the system approaches absolute zero |
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Delta H > 0 and Delta H < 0 can be associated with what changes in a protein. |
Heat into a protein system changes the molecular interactions If Delta H > O bond breaking interactions If Delta H < 0 bond forming interactions |
