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Weegy: D. facilitated diffusion. User: Pinocytosis is an example of A. osmosis. B. simple diffusion. C. active transport. D. facilitated diffusion. Weegy: Pinocytosis is an example of active transport. User: When does the cell have to use active transport? A. when the cell is low on energy B. when the cell is in a highly concentrated solution C. to move molecules across the membrane quickly D. to move molecules across the membrane against a gradient Weegy: The cell have to use active transport: when the cell is in a highly concentrated solution. (More)

Weegy: A function of the plant cell wall is it prevents the cell from bursting. (More)