Type of Solutions Diffusion and Osmosis are both types of TRANSPORT - that is, no energy is required for the molecules to move into or out of the cell. Sometimes, large molecules cannot cross the plasma membrane, and are "helped" across by . This process, which uses proteins and ATP is called .
Type of Solutions Diffusion and Osmosis are both types of TRANSPORT - that is, no energy is required for the molecules to move into or out of the cell. Sometimes, large molecules cannot cross the plasma membrane, and are "helped" across by . This process, which uses proteins and ATP is called .
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