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The first stable compound of Kreb’s cycle is _____________(a) Citrate(b) Cis- Aconitate(c) Oxaloacetate(d) MalateI had been asked this question in an international level competition.My question is from Mitochondrial Structure and Function in division Mitochondrial Structure and Function of Cell Biology

Answer»

The correct CHOICE is (a) CITRATE

The best EXPLANATION: Kreb’s cycle has Citrate as its first stable compound. That is why it is also CALLED Citric Acid Cycle. Citrate is a compound containing three carboxylic acid groups and it is THUS also called Tricarboxylic Acid cycle or TCA cycle.



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