Multiple Choice
Complex carbohydrates are comprised of which of the following?
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4. Biomolecules
Carbohydrates
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What is the body's preferred energy source?
A
Nucleic acids
B
Amino acids
C
Fatty acids
D
Glucose
Verified step by step guidance1
Understand the question: The problem is asking about the body's preferred energy source. This requires knowledge of macromolecules and their roles in metabolism.
Review the options: Nucleic acids, amino acids, fatty acids, and glucose. Each of these plays a specific role in the body, but not all are primarily used for energy.
Recall the function of glucose: Glucose is a carbohydrate and the primary energy source for cells. It is broken down during cellular respiration to produce ATP (adenosine triphosphate), the energy currency of the cell.
Eliminate incorrect options: Nucleic acids are involved in genetic information storage and transfer, not energy production. Amino acids are primarily used for protein synthesis, and fatty acids are a secondary energy source, used when glucose is not readily available.
Conclude that glucose is the correct answer: Glucose is the body's preferred energy source because it is readily metabolized through glycolysis, the citric acid cycle, and oxidative phosphorylation to produce ATP efficiently.
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