Aerobic respiration is a metabolic process that occurs in the presence of oxygen and involves the breakdown of glucose to produce energy. This process takes place in the mitochondria of cells and is the most efficient way to produce energy in the form of adenosine triphosphate (ATP). The overall equation for aerobic respiration is:

Glucose + Oxygen → Carbon Dioxide + Water + Energy (ATP)

The process of aerobic respiration involves several steps, including glycolysis, the Krebs cycle, and the electron transport chain.

1. Glycolysis:
Glycolysis is the initial step of aerobic respiration that takes place in the cytoplasm of the cell. In this step, glucose molecules are broken down into two molecules of pyruvate, producing a small amount of ATP and reducing equivalents in the form of NADH.

2. Krebs cycle:
After glycolysis, the pyruvate molecules enter the mitochondria, where they are further broken down in a series of reactions called the Krebs cycle. During this cycle, the carbon atoms from pyruvate are released as carbon dioxide, and reducing equivalents in the form of NADH and FADH2 are produced.

3. Electron transport chain:
The NADH and FADH2 molecules generated in glycolysis and the Krebs cycle enter the electron transport chain, which is located in the inner mitochondrial membrane. This chain consists of a series of protein complexes that transfer electrons from NADH and FADH2 to oxygen. As the electrons are transferred, energy is released and used to pump protons across the membrane, creating a proton gradient. This gradient is then used by ATP synthase to produce ATP.

The total energy produced during aerobic respiration can be calculated by considering the number of ATP molecules generated from each NADH and FADH2 molecule. On average, each NADH molecule yields around 2.5 ATP, while each FADH2 molecule yields around 1.5 ATP. Since glycolysis produces 2 NADH molecules and the Krebs cycle produces 8 NADH molecules and 2 FADH2 molecules per glucose molecule, we can calculate the total energy produced as follows:

(2 NADH x 2.5 ATP) + (8 NADH x 2.5 ATP) + (2 FADH2 x 1.5 ATP) = 5 ATP + 20 ATP + 3 ATP = 28 ATP

Since each ATP molecule carries around 7.6 K.Cal of energy, the total energy produced can be calculated as:

28 ATP x 7.6 K.Cal/ATP = 212.8 K.Cal

However, this calculation only accounts for the ATP produced through oxidative phosphorylation in the mitochondria. Additional ATP is also generated during glycolysis, resulting in a total energy production of around 686 K.Cal per glucose molecule.

Hence, option C is the correct answer.