Multiple Choice
Where do mammals and birds obtain the energy required to generate body heat for thermoregulation?
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38. Animal Form and Function
Metabolism and Homeostasis
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How does your body primarily generate heat to maintain homeostasis?
A
By absorbing heat directly from the environment
B
Through the process of photosynthesis in skin cells
C
By excreting sweat onto the skin
D
Through metabolic reactions such as cellular respiration
Verified step by step guidance1
Understand the concept of homeostasis: Homeostasis refers to the body's ability to maintain a stable internal environment, including temperature regulation, despite external changes.
Recognize the primary source of heat generation in the body: Heat is primarily generated through metabolic reactions, which are chemical processes occurring in cells to produce energy.
Learn about cellular respiration: Cellular respiration is a key metabolic process where glucose and oxygen are converted into energy (ATP), carbon dioxide, and water. This process releases heat as a byproduct.
Distinguish between the incorrect options: Absorbing heat from the environment is not a primary mechanism for heat generation, photosynthesis does not occur in human cells, and sweating is a cooling mechanism rather than a heat-generating process.
Conclude that metabolic reactions, such as cellular respiration, are the primary way the body generates heat to maintain homeostasis.
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