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

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

The diffusion of water through a semi permeable membrane

When the cell membrane changes shape and draws in particles

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

When the cell membrane changes shape an pushes out particles

Quick Energy Source

Building blocks of proteins

Long Term Energy Source

Makes enzymes, hormones, muscle, and other body structures

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