Step 5: Exploration Activity: Connecting Physics to Biology Note: The step 5 exp

Question

Step 5: Exploration Activity: Connecting Physics to Biology
Note: The step 5 exploration activity will be submitted through Blackboard, not the MasteringPhysics website, as a separate assignment. For further clarity, please consult your professor.
The energy we require to live comes from the chemically stored potential energy in food, which is transformed into other energy forms during the metabolism process.
PHS 1120, Principles of Modern Physical Science 3
What consequence awaits a person whose combined work and heat output is less than the energy consumed? What happens when the person's work and heat output is greater than the energy consumed? Can an undernourished person perform extra work without extra food? Discuss and defend your answers.
Write a 5-paragraph essay connecting physical principles with biology. Include your responses to the questions above.

Explanation / Answer

If a person consumes more energy than combined work and heat output, the unexpended energy is stored in various places in the body, especially in the form of fat. So, as a result the person will become obese.

If a person consumes less energy than combined work and heat production, his body utilizes more energy reserves to maintain the metabolic activities. So, the person will become lean.

No, undernourished person cannot perfom extra work without extra food, because he does not have enough fuel reserves to carry out the work.

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