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vocabsection4
science section 4
Question | Answer |
---|---|
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 |