Question

Explain Krebs cycle. Highlight the metabolic intermediates and sites for NADH, FADH2 and ATP production.

31 Jan 2026
Answer :
Word Count : 429
The Krebs cycle, also known as the citric acid cycle or tricarboxylic acid (TCA) cycle, is a central metabolic pathway in plant cells that occurs in the mitochondrial matrix. It plays a pivotal role in cellular respiration by oxidizing acetyl-CoA derived from carbohydrates, fats, and proteins to release energy, which is stored in the form of high-energy electron carriers NADH and FADH2 and in the form of ATP or GTP. The cycle also provides intermediates for various biosynthetic pathways, linking energy production with anabolic processes. The cycle begins with the condensation of a two-carbon acetyl group from acetyl-CoA with a four-carbon molecule, oxaloacetate, to form citrate, a ________ ____ ___ ____ ___ _____.
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