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Practice problem

Facilitated Diffusion — Definition & Types

By Diana Kline
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Contributors
This image shows blue and yellow molecules at a high concentration outside of a cell and at a low concentration inside of a cell. The yellow molecules are moving down their concentration gradient into the cell. The blue molecules are moving up their concentration gradient out of the cell.

By Emma Dittmar CC BY-SA 4.0, from Wikimedia Commons

Is the image above facilitated diffusion? Is it passive or active transport?

Choose one answer

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

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