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Which fact is most important in explaining how enzymes speed reactions? Very low potential energy tends to make molecules unstable. High-energy collisions are less common than low-energy collisions. It takes less energy to break a hydrogen bond than a covalent bond. Large molecules collide more energetically than small molecules. Every reaction step adds to the time required for the overall reaction. Study Enzyme Activity.
Weegy: The answer is c enzymes Proteins that speed up the rate of chemical reactions in the cell without requiring high temperatures are [ enzymes. ] User: Why is the shape of a enzyme so important? a The shape determines if the enzyme is attractive to other organisms.nzymes affect the reactions in living cells by lowering the a active site energy of the reaction. b activation energy of the reaction c speed of the reaction. d temperature of the reaction. Weegy: Enzymes affect the reactions in living cells by lowering the activation energy of the reaction.