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Multiple Choice
Which of the following macromolecules does not primarily function as an energy source in biological systems?
A
Proteins
B
Nucleic acids
C
Carbohydrates
D
Lipids
Verified step by step guidance
1
Identify the primary functions of each macromolecule listed: proteins, nucleic acids, carbohydrates, and lipids.
Understand that carbohydrates are primarily used as an energy source in biological systems, providing quick energy through glucose metabolism.
Recognize that lipids, while also serving as structural components of cell membranes, are a major energy storage form, providing long-term energy through fatty acid oxidation.
Acknowledge that proteins, although they can be used for energy, primarily serve as building blocks for tissues, enzymes, and other functional molecules in the body.
Note that nucleic acids, such as DNA and RNA, are primarily involved in the storage and transmission of genetic information, rather than serving as an energy source.