According to Fick's law of diffusion, which of the following changes would decrease the rate of net diffusion of a substance across a membrane?
a. an increase in the substance's concentration gradient
b. an increase in the permeability of the membrane to the substance
c. an increase in the surface area of the membrane
d. an increase in the thickness of the membrane
e. none of these answers.
D
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The structure of RNA differs from DNA in that
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