How do glycolysis, pyruvate processing, the Krebs cycle, and the electron transport chain work together to provide energy for the cell?

When the cell gains glucose, the process of glycolysis occurs and then the glucose is broken down into pyruvate.

Now, in pyruvate processing, Acetyl CoA is produced and used in the Krebs Cycle.

During that process, NADH and FADH2 are made and go into the electron transport chain. That is where water and ATP are made.