A cell is placed into a 1 millimolar solution of substance X and over time you witness the concentration of X inside the cell increase to 5 millimolar.The best explanation for this is:
A) X is moving into the cell by simple diffusion
B) X is moving into the cell by diffusion through a protein channel
C) X is moving into the cell by facilitated diffusion
D) X is moving into the cell by primary active transport
E) It is not possible to tell which mechanism is responsible for the transport of X
Correct Answer:
Verified
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A)200
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