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The cell membrane is considered osmosis because it only allows certain compounds to travel through freely. The random movement of molecules down their concentration gradient is called: Moving down a concentration gradient means moving from a (lower or higher) to a (lower or higher) concentration. Some compounds need to travel into the cell through a membrane protein, this is an example of ___________.

Sagot :

Some compounds need to travel into the cell through a membrane protein, this is an example of _selective permeability_.