Urea Is a Small Molecule That Is Transported Out of Most

question 45

Essay

Urea is a small molecule that is transported out of most cells by passive diffusion,but some cells,including kidney cells,have urea-facilitated transporters.Given an assay to measure the amount of urea on one side of the cell plasma,design an experiment to distinguish which mechanism an uncharacterized cell you have isolated uses to transport urea.Include graphs,if this aids in your discussion.

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