5 Questions
Which type of diffusion involves the transport of substances through the lipid bilayer or through the channel proteins of the cell membrane?
Simple diffusion
Which type of substances diffuse directly through the lipid bilayer?
Non-polar and lipid-soluble (hydrophobic) substances
What type of diffusion occurs along an electrochemical gradient according to physiochemical laws?
Simple diffusion
Which substances are examples of non-polar and lipid-soluble (hydrophobic) substances that can diffuse through the lipid bilayer?
Oxygen, carbon dioxide (CO2), and fat-soluble vitamins
Which type of diffusion involves substances diffusing through protein channels?
Facilitated diffusion
Test your knowledge of the transport mechanisms across the cell membrane. This quiz covers the selective permeability, passive and active transport, and the composition of interstitial fluid.
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