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Practice problem

Facilitated Diffusion — Definition & Types

By Valeri Natole
+2 contributors
Contributors
A protein channel. The channel starts in the extracellular fluid and passes to the intracellular fluid. A is located in the extracellular fluid.

By Lupask [Public domain], from Wikimedia Commons

The gray block represents the plasma membrane, while the yellow block represents a transport protein. Molecule A, a large, hydrophilic molecule, moves into the cell via facilitated diffusion through this yellow transport protein.

On which side of the cellular membrane is there a lower concentration of Molecule A?

Choose one answer

Type a concept, like “slope” or “photosynthesis”.

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