Question

bio - 201 topic 1: anatomy, physiology, homeostasis, and the chemistry of life
practice it
the effect an enzyme has on a chemical reaction is because the enzyme
pre - vents the reaction from occurring.
causes the reaction to produce a different product.
changes the ph of the reaction.
increases the activation energy of the reaction.
lowers the activation energy of the reaction.

Explanation:

Enzymes are biological catalysts. Catalysts lower the activation - energy required for a chemical reaction to occur, thus speeding up the reaction rate without being consumed in the reaction. They do not prevent the reaction, change the product, change the pH as their main function, or increase the activation energy.

Answer:

lowers the activation energy of the reaction.