What Are the Advantages of Metabolic Pathways in the Cells

Multiple Choice

What are the advantages of metabolic pathways in the cells?

A) Cells can speed up the reactions to maximize use of substrates until they are all "used up".
B) Cells use less energy when the reaction happens in multiple steps rather than single one.
C) When products are not used up and therefore accumulate in cells, cells can shut down the pathway.
D) Many enzymes involved in intermediate steps the metabolic pathway decrease probability of mutations.