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Relate the laws of thermodynamics to living organisms.
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7. Energy and Metabolism
Laws of Thermodynamics
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Which of the following statements is true regarding how energy moves up the food chain?
A
All of the energy is not transferred from producer to consumer because some of the energy is destroyed.
B
All of the energy is transferred from producer to consumer.
C
All of the energy is not transferred from producer to consumer because some of the energy is lost as heat.
D
None of the above.
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Understand that energy transfer in a food chain follows the principle of energy loss, primarily due to metabolic processes.
Recall the First Law of Thermodynamics, which states that energy cannot be created or destroyed, only transformed; however, during energy transfer, some energy is converted to heat and lost to the environment.
Recognize that when energy moves from producers (like plants) to consumers (like herbivores), not all energy is passed on because organisms use some energy for life processes such as movement, growth, and reproduction.
Identify that the statement 'All of the energy is not transferred from producer to consumer because some of the energy is lost as heat' correctly reflects this concept of energy loss during transfer.
Conclude that the other options are incorrect because energy is never completely transferred without loss, and energy is not destroyed but transformed, mainly into heat.
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