객관식
Which of the following statements is true regarding how energy moves up the food chain?
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3. Energy & Cell Processes
Laws of Thermodynamics
객관식
According to the second law of thermodynamics, which of the following is true?
A
Energy conversions increase the order in the universe.
B
The total amount of energy in the universe is constant.
C
The entropy of the universe is constantly decreasing.
D
All reactions produce some heat.
E
The decrease in entropy associated with life must be compensated for by increased entropy in the environment in which life exists.
검증된 단계별 안내1
Understand the second law of thermodynamics, which states that the entropy of an isolated system always increases over time. Entropy is a measure of disorder or randomness.
Recognize that energy conversions in biological systems are not 100% efficient, and some energy is always lost as heat, contributing to increased entropy.
Consider the statement 'The total amount of energy in the universe is constant.' This aligns with the first law of thermodynamics, which is the law of conservation of energy, not the second law.
Evaluate the statement 'The entropy of the universe is constantly decreasing.' This contradicts the second law, as entropy tends to increase.
Understand that life forms maintain order and decrease entropy locally, but this decrease is offset by an increase in entropy in the surrounding environment, consistent with the second law.
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