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Multiple Choice
What type of molecule do animal cells primarily use for long-term energy storage?
A
Nucleic acids
B
Lipids
C
Carbohydrates
D
Proteins
Verified step by step guidance
1
Understand the role of different biomolecules in the body: Nucleic acids are primarily involved in genetic information storage and transfer, proteins serve as enzymes and structural components, carbohydrates are used for short-term energy storage, and lipids are used for long-term energy storage.
Recognize that lipids, such as fats and oils, are the primary molecules used by animal cells for long-term energy storage due to their high energy density.
Recall that lipids are stored in adipose tissue in animals, which can be metabolized to release energy when needed.
Consider the structure of lipids: they are composed of glycerol and fatty acids, which can be broken down to release energy through metabolic pathways like beta-oxidation.
Conclude that among the given options, lipids are the correct choice for long-term energy storage in animal cells.