Question

quiz! which of the following graphs best shows the relationship between the reaction rate of an enzyme - catalyzed reaction and temperature?

Explanation:

Enzymes are proteins that catalyze reactions. At low temperatures, enzyme activity (and thus reaction rate) increases with temperature due to more kinetic energy for collisions. However, at high temperatures, enzymes denature (lose their shape), so the reaction rate decreases. Graph C shows an increase in reaction rate with temperature up to an optimal point, then a decrease, which matches enzyme - temperature behavior. Graph A shows a continuous increase (ignoring denaturation), Graph B shows a plateau (not typical as denaturation causes a decrease), and Graph D shows a linear increase (ignoring denaturation).

Answer:

C.