Biology for IGCSE & O level - Movement Into And Out Of Cells (Section 3 - No. 50)
Which of the following is an example of facilitated diffusion?
The movement of oxygen from the lungs to the bloodstream.
The movement of glucose through a protein channel.
The movement of sodium ions out of a nerve cell.
Water moving through aquaporins.
Explanation
Both are examples of facilitated diffusion, which involves the assistance of a protein.
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