BIO NMDCAT BIOLOGICAL MOLECULES
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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