The graph below depicts the amount of energy involved over the course of a chemical reaction.
The graph indicates that

Question

The graph below depicts the amount of energy involved over the course of a chemical reaction. 
The graph indicates that

Quizplus · Accepted Answer

The graph shows that the products (H₂O and CO₂) are at a lower energy level than the substrates (glucose and O₂). This means that energy is released during the reaction, indicating that an input of energy is required to start the reaction. Therefore, choice B is correct. The graph does not indicate that the reaction can only run in one direction or that it requires an enzyme, so choices C and D are incorrect. Choice A is also incorrect because the graph shows the opposite - the products have less energy than the substrates.

The Graph Below Depicts the Amount of Energy Involved Over