35. The paragraph at the top of the page tells you "Catalase [is] a biological catalyst produced by cells [that] speeds the breakdown of hydrogen peroxide."
Of course, you know that, in general, a catalyst is a substance that facilitates a chemical reaction without being used up as a result of that reaction.
36. Catalase is most active at the temperature of 35 °C. (This is not unexpected, as 35 °C is near the temperature considered to be normal body temperature (37 °C).) The table and the corresponding graph show this to be the case.
