Aerobic cellular respiration has three stages : ..................... , ...................., and ...................

Explanation

**Step-by-Step Solution:**

1. **Understanding Aerobic Cellular Respiration**: Aerobic cellular respiration is a process that occurs in the presence of oxygen and involves the breakdown of glucose to produce energy.

2. **Identifying the Stages**: Aerobic cellular respiration consists of three main stages:
- **Glycolysis**: This is the first stage where glucose, a six-carbon molecule, is broken down into two molecules of pyruvic acid, which are three-carbon molecules. This process occurs in the cytoplasm of the cell.
- **Krebs Cycle (Citric Acid Cycle)**: The second stage occurs in the mitochondria. Here, pyruvic acid is converted into oxaloacetic acid, which then undergoes a series of reactions to form citric acid (a six-carbon compound) and release energy carriers.
- **Electron Transport Chain**: The final stage also takes place in the mitochondria. In this stage, electrons are transferred through a series of proteins, leading to the production of ATP (adenosine triphosphate), the energy currency of the cell.
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