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nmdcat.online June 27, 2026

The fluid mosaic model of the cell membrane describes the arrangement of phospholipids as a

A. Single layer with proteins only on the outer surface
B. Rigid bilayer with proteins spanning the interior
C. Fluid bilayer with proteins embedded or attached
✓
D. Solid monolayer with carbohydrates coating the exterior

📝 Explanation

The model proposes a dynamic, fluid phospholipid bilayer where individual lipid molecules can move laterally. Proteins are not just on the surface but are integral or peripheral, creating a "mosaic" pattern that floats within the fluid lipid sea.

📖 Additional Information

  • Single layer with proteins only on the outer surface
  • Rigid bilayer with proteins spanning the interior
  • Fluid bilayer with proteins embedded or attached
  • Solid monolayer with carbohydrates coating the exterior

The model proposes a dynamic, fluid phospholipid bilayer where individual lipid molecules can move laterally. Proteins are not just on the surface but are integral or peripheral, creating a "mosaic" pattern that floats within the fluid lipid sea.

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