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Answer: No
Step-by-step explanation:
A cell will use energy when molecules will diffuse out of the cell more often than in the cell down the concentration gradient. This also depends very much on the fact of what kind of molecule we're talking about and how easy it is for this molecule to pass the membrane. These are all factors that need to be taken into account.
Answer: No, materials move within the cell's cytosol by diffusion, and certain materials move through the plasma membrane by diffusion