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Chapter 1
Cell Structure and Function
Question | Answer |
---|---|
Diffusion | the main method by which small molecules move a across a cell membrane. |
osmosis | the diffusion of water molecules through a selectively permeable membrane. |
selectively permeable | means that some substances can pass through the membrane while others cannot (Example is the cell membrane) |
Diffusion | the main method by which small molecules move a across a cell membrane. |
osmosis | the diffusion of water molecules through a selectively permeable membrane. |
selectively permeable | means that some substances can pass through the membrane while others cannot (Example is the cell membrane) |
passive transport | the movement of dissolved materials through a cell membrane without using cellular energy |
active transport | movement of materials through a cell membrane using cellular energy. |