Multiple Choice
What is the primary source of energy for the human body?
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7. Energy and Metabolism
Introduction to Energy
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What is the body's primary energy source?
A
Glucose
B
Protein
C
Fat
D
Vitamins
Verified step by step guidance1
Understand that the body's primary energy source is the nutrient that is most readily used by cells to produce ATP, the energy currency of the cell.
Recall that carbohydrates, specifically glucose, are the most immediate source of energy for the body. Glucose is a simple sugar that is easily broken down during cellular respiration to produce ATP.
Consider the role of proteins and fats. Proteins are primarily used for building and repairing tissues, while fats are stored energy sources that are used when glucose levels are low.
Recognize that vitamins are not a direct source of energy. Instead, they act as coenzymes that help in various metabolic processes, including energy production.
Conclude that glucose is the body's primary energy source because it is the most efficient and immediate source of energy for cellular activities.
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