Multiple Choice
Which of the following forms of carbohydrates do muscle cells prefer to use for fuel?
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4. Biomolecules
Carbohydrates
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Which nutrient serves as a major source of energy in most living organisms?
A
Minerals
B
Nucleic acids
C
Carbohydrates
D
Vitamins
Verified step by step guidance1
Understand the role of each nutrient listed in the problem: Minerals, Nucleic acids, Carbohydrates, and Vitamins.
Recall that carbohydrates are organic molecules composed of carbon, hydrogen, and oxygen, typically in the ratio of 1:2:1, and are a primary energy source for most living organisms.
Recognize that carbohydrates, such as glucose, are broken down during cellular respiration to produce ATP (adenosine triphosphate), the energy currency of the cell.
Eliminate the other options: Minerals and vitamins are essential for various biochemical processes but do not serve as a primary energy source. Nucleic acids (DNA and RNA) are involved in genetic information storage and transfer, not energy production.
Conclude that carbohydrates are the correct answer because they are the major source of energy in most living organisms.
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