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Which of the Following Statements Is True About Enzymes?

The true statement is that an enzyme lowers the activation energy needed to convert substrate into product; it speeds the reaction without changing its equilibrium.

Question

Which of the following statements is true about enzymes?

A. Enzymes are the building blocks for the cell's cytoskeleton.

B. An enzyme reduces the amount of energy needed to convert a substrate into product.

C. Enzymes are metals that act as non-carbon-based catalysts.

D. Enzymes are vitamins that prevent disease.

E. Enzymes cause reactions to occur in cells because they raise the temperature of the cells.

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Evidence boundary

This answer applies only to the A–E option set in UC San Diego Biology 100 Quiz 1, Form 2, Question 12. In option B, amount of energy needed is interpreted precisely as activation energy. Cofactors and coenzymes do not make options C or D correct.