How long does diffusion last?
A. Until the concentration of particles in the system is equal
B. Until a region in the system has a smaller concentration of particles than the other
C. Until a region in the system has a greater concentration of particles than the other
D. Until the particles disappear from the system
Preview next quiz:
Sometimes, energy is required for ____ molecules to go in or out of the cell because they cannot fit into the membrane.
A. big
B. small
C. crunchy
D. water
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