Explain how the analogy of a ball and a hill is useful for describing the forms of energy to beginning physiology students. Use the synthesis of glucose by plants and the break down of glucose by humans as specific examples of the energy hill.

What will be an ideal response?


Energy is required for a person to move a ball from a lower height to a higher one, and that the ball will automatically roll down the hill if allowed to, without further input of energy. The substrates CO2 and H2O require energy to be combined into C6H12O6; the energy of the sun provides this energy to "roll" the substrates up the energy hill as they combine. The glucose then contains the potential energy provided by the sun. When enzymes are present, the molecule easily breaks down to CO2 and H2O releasing energy that is used by the cell to perform
work.

Anatomy & Physiology

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What does a reference range for a medical test infer?

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