Question:
Energy production, energy storage, building macromolecules and assisting in lipid metabolism are the functions of
Energy production, energy storage, building macromolecules and assisting in lipid metabolism are the functions of
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Carbohydrates act as the primary metabolic "currency" and carbon skeleton providers.
Whenever a question lists both "energy production" and "energy storage" along with building structural cell walls (macromolecules like cellulose), think of carbohydrates.
Whenever a question lists both "energy production" and "energy storage" along with building structural cell walls (macromolecules like cellulose), think of carbohydrates.
Updated On: Jul 29, 2026
- Proteins
- Carbohydrates
- Enzymes
- Amino acids
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Living organisms rely on main classes of biomolecules—carbohydrates, proteins, lipids, and nucleic acids—to sustain metabolic pathways, maintain structure, and store genetic information.
Step 2: Detailed Explanation:
Carbohydrates are the primary organic compounds involved in energy transactions in cells.
They serve multiple fundamental functions:
1. Energy Production: Monosaccharides like glucose are the primary substrates for glycolysis and cellular respiration, yielding ATP.
2. Energy Storage: Excess glucose is polymerized into storage forms—starch in plants and glycogen in animals—which can be readily hydrolyzed when energy is required.
3. Building Macromolecules: Carbohydrate derivatives form structural backbones (cellulose in plant cell walls, chitin in fungal cell walls, ribose and deoxyribose in nucleic acids).
4. Assisting in Lipid Metabolism: Acetyl-CoA derived from glycolysis serves as the building block for fatty acid synthesis, thus directly linking carbohydrate consumption with lipid metabolism.
While proteins and amino acids serve structural and enzymatic purposes, and enzymes catalyze biochemical processes, carbohydrates are the primary molecules associated with this specific combination of metabolic energy management and macromolecular synthesis support.
Step 3: Final Answer:
The stated functions are primarily associated with carbohydrates.
Living organisms rely on main classes of biomolecules—carbohydrates, proteins, lipids, and nucleic acids—to sustain metabolic pathways, maintain structure, and store genetic information.
Step 2: Detailed Explanation:
Carbohydrates are the primary organic compounds involved in energy transactions in cells.
They serve multiple fundamental functions:
1. Energy Production: Monosaccharides like glucose are the primary substrates for glycolysis and cellular respiration, yielding ATP.
2. Energy Storage: Excess glucose is polymerized into storage forms—starch in plants and glycogen in animals—which can be readily hydrolyzed when energy is required.
3. Building Macromolecules: Carbohydrate derivatives form structural backbones (cellulose in plant cell walls, chitin in fungal cell walls, ribose and deoxyribose in nucleic acids).
4. Assisting in Lipid Metabolism: Acetyl-CoA derived from glycolysis serves as the building block for fatty acid synthesis, thus directly linking carbohydrate consumption with lipid metabolism.
While proteins and amino acids serve structural and enzymatic purposes, and enzymes catalyze biochemical processes, carbohydrates are the primary molecules associated with this specific combination of metabolic energy management and macromolecular synthesis support.
Step 3: Final Answer:
The stated functions are primarily associated with carbohydrates.
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