Question

effect of enzymes (graph: reaction pathway without enzyme, activation energy without enzyme, activation energy with enzyme, reactants, reaction pathway with enzyme, products, course of reaction, energy axis). the graph shows how enzymes affect reactions in. options: enzyme decrease the activation energy of the reaction. enzymes reverse the direction of the reaction. enzymes increase the energy of the reactants. enzymes decrease the energy level of the products.

Explanation:

1. Analyze the graph: The graph shows two reaction pathways (with and without enzyme) and their activation energies.
2. Evaluate each option:

• Option 1: The activation energy with enzyme is lower than without enzyme, so enzymes decrease activation energy. This matches the graph.
• Option 2: Enzymes do not reverse reaction direction; they speed up reactions by lowering activation energy.
• Option 3: Enzymes don't increase reactant energy; they affect activation energy.
• Option 4: Enzymes don't change product energy level; they affect the energy needed to start the reaction.

Answer:

A. Enzyme decrease the activation energy of the reaction.