Question

5 hot spot 4 points
choose the curve on the graph that shows the activation energy with an enzyme added.

Explanation:

Enzymes are biological catalysts. Catalysts lower the activation energy (the energy barrier that must be overcome for a reaction to occur) of a reaction. In the graph, the curve with the lower peak (the red curve in the given graph) represents the reaction with an enzyme added as it has a lower activation energy compared to the higher - peaked curve (the blue curve which represents the reaction without an enzyme).

Answer:

The red curve (the one with the lower peak)