Multiple Choice
Which of the following is a primary biological role of lipids in living organisms?
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4. Biomolecules
Lipids
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Which of the following is a primary function of fats in your diet?
A
Catalyzing biochemical reactions as enzymes
B
Providing a concentrated source of energy
C
Serving as the main source of genetic information
D
Forming the rigid structure of plant cell walls
Verified step by step guidance1
Understand the role of fats in biological systems: Fats, also known as lipids, are macromolecules that serve various functions in organisms, including energy storage, insulation, and cell membrane structure.
Eliminate incorrect options: Review each answer choice and determine whether it aligns with the known functions of fats. For example, fats do not catalyze biochemical reactions as enzymes (this is the role of proteins) or serve as the main source of genetic information (this is the role of nucleic acids).
Focus on energy storage: Fats are a concentrated source of energy, providing more energy per gram compared to carbohydrates or proteins. This is due to their high number of carbon-hydrogen bonds, which release energy when broken during metabolism.
Consider structural roles: While fats are important for cell membranes (phospholipids), they do not form the rigid structure of plant cell walls. This role is fulfilled by cellulose, a carbohydrate.
Select the correct answer: Based on the analysis, the primary function of fats in the diet is providing a concentrated source of energy.
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