06EnergyFQ - 7. What is an enzyme and why are they useful...

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Focus Questions: Energy 1.  What is energy?  How many states of energy are there? 2.  What forms of energy do we see in biological systems?  Do such systems conform to the laws of  thermodynamics? 3.  What is meant by the term entropy, and what is its significance in terms of thermodynamics? 4.  Do chemical reactions have only one “direction?”  Can we predict the direction of reactions? 5.  What does it mean to say that a reaction is “spontaneous?”  How does this relate to the concept of  equilibrium? 6.  Compare and contrast exergonic and endergonic reactions.
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Unformatted text preview: 7. What is an enzyme and why are they useful in biological systems? What is the role of enzymes in terms of thermodynamics? Do all biological reactions need enzymes? 8. What is ATP and how is it used in biological systems? How does this relate to the concept of coupled reactions? 9. If the hydrolysis of ATP is an exergonic reaction, how can we have ATP at all? Kenneth A. Mason (2005). This material can be used for non-profit educational purposes, if properly attributed. All other uses are prohibited unless written permission is granted....
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This note was uploaded on 02/07/2011 for the course BIO 111 taught by Professor Dr. bos during the Fall '10 term at Purdue University-West Lafayette.

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06EnergyFQ - 7. What is an enzyme and why are they useful...

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