Some students carried out an investigation into how temperature affects the breakdown of starch into maltose. They placed equal volumes of amylase and starch solution into several test-tubes. For 30 minutes, the test-tubes were kept at temperatures ranging from $10\,^{\circ}\text{C}$ to $60\,^{\circ}\text{C}$. After this, they measured the starch concentration in each test-tube. Which graph would be produced from these results?
Biology 5090 · O Level · Effects of temperature and pH