객관식
When chemical, transport, or mechanical work is done by an organism, what happens to the heat generated?
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7. Energy and Metabolism
Laws of Thermodynamics
객관식
Which of the following is an example of the second law of thermodynamics as it applies to biological reactions?
A
All types of cellular respiration produce ATP.
B
Cellular respiration releases some energy as heat.
C
The first and second choices are correct.
D
The first, second, and third choices are correct.
E
The aerobic respiration of one molecule of glucose produces six molecules each of carbon dioxide and water.
검증된 단계별 안내1
Understand the second law of thermodynamics: It states that in any energy transfer or transformation, the total entropy (disorder) of a system and its surroundings always increases.
Apply this concept to biological reactions: In biological systems, energy transformations are not 100% efficient, and some energy is always lost as heat, increasing the entropy of the surroundings.
Analyze the options: The first option states that cellular respiration produces ATP, which is an energy transformation but does not directly address entropy or energy loss.
Consider the second option: Cellular respiration releases some energy as heat, which aligns with the second law of thermodynamics as it indicates an increase in entropy.
Evaluate the correct answer: The aerobic respiration of glucose producing carbon dioxide and water involves breaking down a complex molecule into simpler ones, increasing entropy, and releasing energy as heat, which is consistent with the second law of thermodynamics.
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