* Mitochondria: The powerhouse of the cell! Mitochondria are the primary site of cellular respiration. Here, glucose is broken down into ATP, the cell's energy currency. This process occurs in four main steps: glycolysis, the Krebs cycle (also known as the citric acid cycle), the electron transport chain, and oxidative phosphorylation.
* Cytoplasm: The fluid inside the cell where the first step of cellular respiration, glycolysis, takes place. Glycolysis breaks down glucose into pyruvate.
* Nucleus: While not directly involved in the process itself, the nucleus contains the DNA that holds the genetic instructions for the enzymes involved in cellular respiration.
Let me know if you'd like a more detailed explanation of the specific roles each organelle plays in cellular respiration!