Which of the following statements best describes the action of enzymes?

Which of the following statements best describes the action of enzymes?

Group of answer choices picks 1

• Enzymes are catalysts that function by increasing the rate of a chemical reaction without being modified in the process
• Enzymes are catalysts that function by increasing the rate of a chemical reaction and are modified during the reaction
• Enzymes are catalysts that increase the amount of product formed from a chemical reaction
• Enzymes are always proteins and can increase the rate of reaction of a chemical reaction
• Enzymes are biological catalysts that change the equilibrium of a reaction to produce more product and drive a chemical reaction to completion