It is a five-carbon compound of the Krebs cycle:
Correct answer: C. Alpha-ketoglutarate
- A. Oxaloacetate
- B. Succinate
- C. Alpha-ketoglutarate
- D. Isocitrate
Explanation
Alpha-ketoglutarate, also known as 2-oxoglutarate, is a key intermediate in several metabolic pathways, including the citric acid cycle (also known as the Krebs cycle or tricarboxylic acid cycle) and amino acid metabolism. It is a five-carbon compound with a keto group (C=O) at the second carbon.It is a five-carbon compound with a keto group (C=O) at the second carbon.: In the citric acid cycle, alpha-ketoglutarate is produced by the decarboxylation of isocitrate.
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Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.
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