Question

1. which of the following best explains why enzymes are necessary for many cellular reactions? a. enzymes supply the oxygen necessary for the reactions. b. enzymes change reactants from solid to liquids during the reactions. c. the reactions take up too much space in the cell if the enzymes are missing. d. the reactions are too slow to meet the needs of the cell if enzymes are missing.

Explanation:

Enzymes are biological catalysts. They speed - up chemical reactions in cells. Without enzymes, many cellular reactions would occur at a rate too slow to support life processes.

Answer:

D. The reactions are too slow to meet the needs of the cell if enzymes are missing.