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    Energy Transfer in Living Organisms

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    -Define the laws of thermodynamics. Include an example to support your definition.
    -What is Gibbs free energy? What are consequences for a biochemical reaction when Gibbs free energy is negative? Explain the role of enzymes when Gibbs free energy is negative and when it is positive.
    -Adenosine triphosphate (ATP) has been called the currency of all living things. Explain what this statement means.
    -What is an absorption spectra? Explain why a green leaf looks green. Is it the same reason a red leaf looks red? Explain your answer.

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    Good evening student. Thank you for choosing BrainMass. It is my hope that this answer will be of assistance to you.

    1. The laws of thermodynamics are a set of scientific principles which dictate how temperature, entropy, and energy behave under various circumstances. They are as follows;

    Zeroth law- if 2 systems are in equilibrium with 3rd system, they are also in equilibrium with each other.
    First law-when heat is added to a system, some of that energy stays in the system and some of it leaves the system and enters the environment surrounding the system. Ex: an internal combustion engine.
    Second law-no reaction is 100% efficient and heat flows from hot areas to cold areas.
    3rd law-the entropy of a system approaches zero as the system ...

    Solution Summary

    This solution summarizes the laws of thermodynamics with examples of each law. It also discusses Gibbs free energy and how it relates to chemical reactions. A brief definition of ATP is included as well as a brief explanation of why a leaf looks green.