Question

quiz! which of the following graphs best shows the relationship between the reaction rate of an enzyme-catalyzed reaction and temperature? graphs a, b, c, d (each with rate of reaction (slow to fast) on y - axis, temperature (low to high) on x - axis: a: curve increasing steeply; b: curve increasing then plateauing; c: curve increasing then decreasing; d: straight line increasing) are shown you are using the free version of this game (with ads). if you want to use the ad - free member version, click the button below. please note: this will open in a new tab/window! please save your progress before proceeding!

Explanation:

Enzyme - catalyzed reactions have an optimal temperature. At low temperatures, reaction rate increases with temperature (due to increased molecular motion and enzyme - substrate collisions). At high temperatures beyond the optimal point, the enzyme denatures, so the reaction rate decreases. Graph C shows an increase to a peak (optimal temperature) and then a decrease, which matches this relationship. Graphs A (continual increase), B (plateaus without decrease), and D (linear increase) do not represent the effect of temperature on enzyme - catalyzed reactions correctly.

Answer:

C. The graph with a curve that rises to a peak and then falls, showing the relationship between the reaction rate of an enzyme - catalyzed reaction and temperature (where reaction rate increases with temperature up to an optimal point and then decreases as temperature becomes too high and the enzyme denatures).