Final answer:
The correct sequence of cellular respiration steps is Gycolysis, Pyruvate Oxidation, Citric Acid Cycle (Krebs cycle), and the Electron Transport Chain. Glycolysis is the first stage, followed by the conversion of pyruvate to Acetyl CoA, the Krebs cycle where Acetyl CoA is fully oxidized, and finally the ETC where ATP is produced in large quantities.
Step-by-step explanation:
The steps of cellular respiration should be put in the following order:
- Glycolysis
- Pyruvate Oxidation
- Citric Acid Cycle (Krebs cycle)
- Electron Transport Chain
Glycolysis is the first stage of cellular respiration and occurs in the cytoplasm of the cell. It involves the breakdown of a glucose molecule into two 3-carbon pyruvate molecules. Pyruvate Oxidation is the intermediate stage that takes place before the citric acid cycle, wherein pyruvate is converted to Acetyl CoA. The Citric Acid Cycle, also known as the Krebs cycle, occurs in the mitochondrial matrix and processes acetyl CoA to carbon dioxide, capturing energy in the form of ATP, NADH, and FADH2. Lastly, the Electron Transport Chain (ETC) takes place on the inner mitochondrial membrane, where electrons are passed along a chain of proteins and energy is generated to form a high yield of ATP.