Five statements about modern cells are given.Which statement is consistent with the claim that catalysts were likely important during the earliest history of life when the first cells were emerging?
A) Every metabolic reaction in a cell has a corresponding enzyme without which the cell cannot function.
B) A cell takes in matter to serve as building blocks for the macromolecules it constructs to form its various structures.
C) Chemical bond energy present in molecules taken in by a cell serves as a source of energy for the cell.
D) Cells are separated from their external environment by a semipermeable membrane that helps regulate which matter enters or leaves the cell.
E) When a cell dies, the chemical changes taking place in the cell's interior come to a complete stop.

Question

Quizplus · Accepted Answer

This statement suggests that every metabolic reaction in a cell requires an enzyme, which implies that early cells would have had to rely on catalysis to speed up reactions and increase efficiency.

Five Statements About Modern Cells Are Given