[Campbell Biology P.193] According to the diagram and text, what is the primary role of an "... | Practice Question

According to the diagram and text, what is the primary role of an "enzyme" in a metabolic pathway?

  • A: To be consumed during the chemical reaction.
  • B: To speed up a specific step in the series of defined chemical reactions.
  • C: To act as the final product of the metabolic pathway.
  • D: To provide the initial starting molecule for the pathway.

Explanation

The text explicitly states: 'Each step is catalyzed by a specific enzyme, a macromolecule that speeds up a chemical reaction.' The diagram visually represents enzymes facilitating the conversion of molecules A to B, B to C, and C to D.