Cell Processes

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When the cell membrane changes shape an pushes out particles

The diffusion of water through a semi permeable membrane

Long Term Energy Source

The movement of molecules from a region in which they are highly concentrated to a region in which they are less concentrated

Makes enzymes, hormones, muscle, and other body structures

Quick Energy Source

The movement of molecules from a more crowded to a less crowded area WITHOUT the use of energy

When concentrations of molecules inside and outside a cell are the same.