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4 Cards in this Set

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Impermeable

Does not allow materials to go thru

Umbrella

Permeable

Allows some materials to pass thru

Tissue

Selectively permeable

The cell membrane (allows) selects and chooses which materials enter and leave the cell

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Molecules

Very small can pass through (permeable) the cell membrane easily basic nutrients (water) (oxygen) (carbon dioxide) are small molecules