In which stage(s) of cellular respiration is acetyl CoA a product?Group of answer choicesglycolysispyruvate oxidationcitric acid cycleoxidative phosphorylation

Identification of Stages Involved with Acetyl CoA

1. Understanding Acetyl CoA: Acetyl CoA is a fundamental molecule that plays a pivotal role in various metabolic pathways, chiefly in cellular respiration.

2. Relevant Stages of Cellular Respiration:

   • Glycolysis: This is the first step in cellular respiration where glucose is broken down into pyruvate. Acetyl CoA is not a product here; rather, it is generated in the subsequent steps.
   • Pyruvate Oxidation: In this stage, pyruvate (the end product of glycolysis) is converted into acetyl CoA. Hence, acetyl CoA is a direct product of pyruvate oxidation.
   • Citric Acid Cycle: Acetyl CoA enters the citric acid cycle (also known as the Krebs cycle). Although acetyl CoA itself is not produced in this stage, it is crucial in fueling the cycle.
   • Oxidative Phosphorylation: This stage is primarily involved in producing ATP and does not involve the formation of acetyl CoA.

Summary of Findings

• Pyruvate Oxidation: Acetyl CoA is a product.
• Citric Acid Cycle: Acetyl CoA is utilized but not produced.
• Glycolysis and Oxidative Phosphorylation: No production of acetyl CoA.

Final Answer

Acetyl CoA is a product in pyruvate oxidation.