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what is meant by kerbs cycle

The citric acid cycle – also known as the TCA cycle or the Krebs cycle – is a series of chemical reactions used by all aerobic organisms to release stored energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins. 

Explanation:

hope it helps:)

the sequence of reactions by which most living cells generate energy during the process of aerobic respiration.

well we can't tell you because we cant see the time give a screen shot or something.