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BIO NMDCAT cell membrane
nmdcat.online July 8, 2026

The movement of molecules from high to low concentration without protein assistance is:

A. Simple diffusion
✓
B. Facilitated diffusion
C. Osmosis
D. Active transport

📝 Explanation

Simple diffusion occurs directly through the lipid bilayer for small, non-polar molecules.

📖 Additional Information

  • Simple diffusion
  • Facilitated diffusion
  • Osmosis
  • Active transport

Simple diffusion occurs directly through the lipid bilayer for small, non-polar molecules.

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