Tricarboxylic Acid Cycle, commonly known as the Krebs cycle or Citric Acid Cycle, refers to the metabolic pathway in which the chemical energy in the form of food molecules is converted into usable energy in cells. The cycle is essential for cellular respiration and produces molecules such as ATP, NADH, and FADH2, which are necessary for various biological processes in the body. Various synonyms exist for the term Tricarboxylic Acid Cycles, including Citrate cycle, TCA cycle, Szent-Gyorgyi-Krebs cycle, and Krebs-Henseleit cycle. These synonyms are used interchangeably in both scientific and layman terms and describe the same metabolic pathway in the body.