"साइट्रिक एसिड चक्र का आरेखात्मक प्रतिनिधित्व दें और चयापचय में इसकी भूमिका पर चर्चा करें।" (Give a diagrammatic representation of citric acid cycle and discuss its role in metabolism.) (UPSC 2020,15 Marks,)

Give a diagrammatic representation of citric acid cycle and discuss its role in metabolism.