BIO NMDCAT BIOLOGICAL MOLECULES

nmdcat.online June 27, 2026

In living systems, the class of biological molecules that primarily serves as the immediate source of energy for cellular processes is

A. Proteins

B. Carbohydrates

✓

C. Lipids

D. Nucleic acids

📝 Explanation

Carbohydrates, particularly monosaccharides like glucose, are the primary and immediate energy source broken down during cellular respiration. Proteins are mainly structural and catalytic, lipids are for long-term energy storage, and nucleic acids store genetic information.

📖 Additional Information

Proteins
Carbohydrates
Lipids
Nucleic acids

Carbohydrates, particularly monosaccharides like glucose, are the primary and immediate energy source broken down during cellular respiration. Proteins are mainly structural and catalytic, lipids are for long-term energy storage, and nucleic acids store genetic information.

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