Two experiments, X and Y, were performed with an enzyme obtained from humans. In experiment X, the temperature was kept constant at $37^{\circ}\text{C}$. For experiment Y, the temperature rose from $37^{\circ}\text{C}$ to $80^{\circ}\text{C}$. Every other variable was unchanged. Which graph represents the results?
Biology 9700 · AS & A Level · Factors that affect enzyme action