Question

which of the statements best describes the overall role of enzymes in metabolism? enzymes only synthesize large molecules. enzymes decrease the speed of reactions. enzymes prevent reactions from requiring atp. enzymes increase the speed of reactions.

Explanation:

Enzymes are biological catalysts. They lower the activation - energy of chemical reactions in metabolism, thus increasing the speed of reactions. They don't only synthesize large molecules, they don't decrease reaction speed, and they don't prevent reactions from requiring ATP.

Answer:

Enzymes increase the speed of reactions.