AP Biology Quiz
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CELLS
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A researcher studies a cell type that concentrates protons inside small vesicles, making the vesicle interior more acidic than the cytosol. A fluorescent dye shows that certain enzymes localize only to these acidic vesicles. When proton pumps are inhibited, vesicle pH rises and the enzymes remain present but show reduced activity. Which feature best explains how compartmentalization influences enzyme activity here?
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