Created by Raja Narayan.
Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/cells/transport-across-a-cell-membrane/v/passive-transport-by-facilitated-diffusion?utm_source=YT&utm_medium=Desc&utm_campaign=mcat
Missed the previous lesson? https://www.khanacademy.org/test-prep/mcat/cells/cell-cell-interactions/v/enzyme-linked-receptors utm_source=YT&utm_medium=Desc&utm_campaign=mcat
MCAT on Khan Academy: Go ahead and practice some passage-based questions!
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