which statement best explains how enzymes speed up a chemical reaction? enzymes lower the activation energy…
which statement best explains how enzymes speed up a chemical reaction? enzymes lower the activation energy of a chemical reaction. enzymes are not changed as a result of a chemical reaction. enzymes remove heat from a chemical reaction. enzymes add heat to a chemical reaction.
Answer
Brief Explanations:
Enzymes are biological catalysts. They speed up reactions by lowering the activation energy - the minimum energy required for a reaction to occur. The other statements do not explain how enzymes speed up reactions. Being unchanged in a reaction is a property of catalysts but not an explanation of speeding - up. Enzymes do not add or remove heat to/from a reaction to speed it up.
Answer:
Enzymes lower the activation energy of a chemical reaction.