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nmdcat.online June 27, 2026

A lipid molecule is classified as amphipathic when it possesses

A. A branched chain structure made entirely of isoprene units
B. Only saturated fatty acids esterified to glycerol
C. Both a strongly hydrophilic region and a hydrophobic region
✓
D. Three fatty acid chains attached to a cholesterol backbone

📝 Explanation

Amphipathic molecules have a dual nature. Phospholipids are a prime example, with a hydrophilic polar "head" (phosphate group) and hydrophobic non-polar "tails" (fatty acid chains). This property is fundamental to the formation of lipid bilayers in water.

📖 Additional Information

  • A branched chain structure made entirely of isoprene units
  • Only saturated fatty acids esterified to glycerol
  • Both a strongly hydrophilic region and a hydrophobic region
  • Three fatty acid chains attached to a cholesterol backbone

Amphipathic molecules have a dual nature. Phospholipids are a prime example, with a hydrophilic polar "head" (phosphate group) and hydrophobic non-polar "tails" (fatty acid chains). This property is fundamental to the formation of lipid bilayers in water.

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