BIO NMDCAT BIOLOGICAL MOLECULES

nmdcat.online June 27, 2026

A characteristic feature that distinguishes phospholipids from triglycerides is the replacement of one fatty acid with a

A. Glycerol molecule

B. Phosphate-containing group

✓

C. Cholesterol molecule

D. Saturated hydrocarbon chain

📝 Explanation

A triglyceride has glycerol esterified to three fatty acids. A phospholipid is a modified triglyceride where one fatty acid chain is replaced by a highly polar phosphate group, which is often further linked to a nitrogenous compound, creating an amphipathic molecule.

📖 Additional Information

Glycerol molecule
Phosphate-containing group
Cholesterol molecule
Saturated hydrocarbon chain

A triglyceride has glycerol esterified to three fatty acids. A phospholipid is a modified triglyceride where one fatty acid chain is replaced by a highly polar phosphate group, which is often further linked to a nitrogenous compound, creating an amphipathic molecule.

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