Enzymes
A)control the speed of a reaction.
B)change shapes to facilitate certain reactions.
C)may place physical stress on the bonds of the substrate.
D)may require cofactors.
E)do all of these.

Question

Quizplus · Accepted Answer

Enzymes control the speed of a reaction by lowering the activation energy needed for the reaction to occur. They change shapes to facilitate certain reactions, allowing the substrate to bind to the active site. Some enzymes may place physical stress on the bonds of the substrate to promote the reaction. Enzymes may also require cofactors, such as vitamins or minerals, to function properly. Therefore, enzymes do all of these.