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Practice problem

Cell Membrane — Structure & Function

By Aaron Lauer
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A picture of a cell membrane. There is a structure going through the membrane.

Image source: By Ruth Lawson CC BY 2.0, via Wikimedia Commons

The picture above shows a cell membrane. How would you describe the structure that the arrow is pointing to?

Choose one answer

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

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