Question

all except which of the following are correct about the actions of enzymes on reactants? enzymes affect the product that is formed. enzymes result in the formation of a product. enzymes are classified as catalysts. enzymes lower the level of energy needed for activation.

Explanation:

• Enzymes are biological catalysts (so "Enzymes are classified as catalysts" is correct).
• Enzymes speed up reactions, helping in product formation (so "Enzymes result in the formation of a product" is correct).
• Enzymes lower the activation energy of reactions (so "Enzymes lower the level of energy needed for activation" is correct).
• Enzymes do not affect the nature of the product formed; they only speed up the reaction rate. The product is determined by the reactants and the reaction pathway, not the enzyme (so this statement is incorrect, making it the answer as the question asks for the exception).

Answer:

Enzymes affect the product that is formed.