What is facilitated diffusion?
A. Movement of molecules against their concentration gradient with the help of energy
B. Movement of molecules from low to high concentration without energy
C. Movement of molecules from high to low concentration through a protein channel without energy
D. The process by which cells engulf large particles
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What does equilibrium in cellular transport mean?
A. The cell has used all its energy
B. The concentration of molecules is the same throughout an environment
C. The cell is actively transporting molecules
D. The cell is at rest
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