The rate of hydrolysis of protein, using an enzyme, was studied at different temperatures - Scottish Highers Chemistry - Question 8 - 2016

The appropriate graph for the hydrolysis of protein at varying temperatures is graph D.

Explanation

The reaction rate of enzyme-catalyzed reactions typically increases with temperature up to a certain point, due to increased kinetic energy of molecules. Beyond that optimal temperature, the reaction rate decreases significantly because of enzyme denaturation and loss of catalytic activity.

In graph D, we observe an initial increase in reaction rate as temperature increases, reaching a peak, and then a decline. This pattern aligns with the behavior expected from enzyme activity in response to temperature changes.