Final answer:
The Krebs cycle, or citric acid cycle, is the second stage of cellular respiration and transforms pyruvate into Acetyl CoA, CO₂, NADH, FADH₂, and a small amount of ATP.
Step-by-step explanation:
The Krebs cycle, also known as the citric acid cycle, is a vital part of cellular respiration. After glycolysis splits glucose into pyruvate in the cell's cytoplasm, pyruvate enters the mitochondria where the Krebs cycle occurs. During the Krebs cycle, the pyruvate is transformed into Acetyl CoA and then fully oxidized to carbon dioxide (CO₂). This process not only generates carbon dioxide but also produces high-energy carriers such as NADH and FADH₂, and a small amount of ATP, which are vital for the final stage of cellular respiration, oxidative phosphorylation, that occurs on the inner mitochondrial membrane and leads to the production of a substantial amount of ATP.
Therefore, the correct statement about cellular respiration is that the Krebs cycle is the second stage of cellular respiration, crucial for transforming the energy originally stored in glucose into a form that can be used to synthesize ATP, the cell's energy currency.