Membrane proteins serve many functions. One of the functions is transportation of substances across the membrane. If a cell biologist placed cells into an environment in which a chemical has been added that blocks the function of these transport proteins, which process will be blocked?

Membrane proteins serve many functions. One of the functions is transportation of substances across the membrane. If a cell biologist placed cells into an environment in which a chemical has been added that blocks the function of these transport proteins, which process will be blocked? 



A. active transport
B. osmosis
C. diffusion
D. phagocytosis
E. pinocytosis






Answer: A


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