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science section 4

Means that some substances can pass through the membrane while others cannot selectively permeable
The main method by which small molecules move across the cell membrane or when molecules move from an area of higher concentration to an area of lower concentration. diffusion
The diffusion of water molecules through a selectively permeable membrane. osmosis
Requires the cell's energy. Transport proteins move materials across the cell membrane. active transport
Materials pass through the cell membrane without requiring the cell's energy. passive transport
The cell uses energy when its engulfed
Created by: CourtneyRa