Besides turning enzymes on or off, what other means does a cell use to control enzymatic activity?
A) cessation of cellular protein synthesis
B) localization of enzymes into specific organelles or membranes
C) exporting enzymes out of the cell
D) connecting enzymes into large aggregates
E) hydrophobic interactions

Question

Quizplus · Accepted Answer

Cells can control enzymatic activity by localizing enzymes into specific organelles or membranes. This can physically separate enzymes from their substrates or create specialized environments that enhance or inhibit enzymatic activity.

Answer: D
 Connecting enzymes into large aggregates can also control enzymatic activity. The proximity of enzymes in these aggregates can allow for enhanced substrate channeling and cooperative effects, or conversely, hinder enzymatic activity by physically blocking access to substrates or inhibitors.

Answers A, C, and E are not correct because the cessation of cellular protein synthesis, exporting enzymes out of the cell, and hydrophobic interactions do not directly control enzymatic activity.

Besides Turning Enzymes on or Off, What Other Means Does