Multiple Choice
Which of the following is false?
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2. Chemical Components of Cells
Four Classes of Macromolecules
Multiple Choice
Which class of biomolecules primarily acts as long-term energy storage for the cell?
A
Carbohydrates (e.g., cellulose)
B
Proteins (e.g., enzymes)
C
Nucleic acids (DNA and RNA)
D
Lipids (e.g., triglycerides)
Verified step by step guidance1
Understand the four major classes of biomolecules: carbohydrates, proteins, nucleic acids, and lipids.
Recall the primary functions of each class: carbohydrates mainly provide short-term energy and structural support, proteins serve as enzymes and structural components, nucleic acids store genetic information, and lipids are involved in long-term energy storage and membrane structure.
Focus on the role of lipids, especially triglycerides, which are known for storing large amounts of energy efficiently over long periods.
Compare the energy storage capacity of carbohydrates and lipids, noting that lipids store more energy per gram due to their chemical structure.
Conclude that lipids are the primary biomolecules used by cells for long-term energy storage.
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