Which does not apply to the diffusion of O₂,CO₂ and small hydrophobic molecules across a membrane?
A)Diffusion is driven by the concentration gradient across the membrane.
B)The diffusion is spontaneous and there is a decrease in free energy as diffusion occurs.
C)The transport is saturable.
D)Membrane proteins are not needed for the diffusion process.

Question

Quizplus · Accepted Answer

The transport of O₂, CO₂, and small hydrophobic molecules across a membrane through simple diffusion is not saturable because it does not involve membrane proteins or transporters that can become saturated; it is driven purely by the concentration gradient.

Which Does Not Apply to the Diffusion of O₂,CO₂ and Small