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Glycolysis begins cellular respiration by breaking glucose into two molecules of a three-carbon compound called pyruvate. What is the second stage of cellular respiration? citric acid cycle (krebs cycle)
Khan Academy provides an overview of the steps involved in cellular respiration, including glycolysis, pyruvate oxidation, the citric acid cycle, and oxidative phosphorylation.
Cellular respiration is the process through which cells convert sugars into energy. To create ATP and other forms of energy to power cellular reactions, cells require fuel and an electron acceptor which drives the chemical process of turning energy into a useable form.
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The cellular respiration process occurs in eukaryotic cells in a series of four steps: glycolysis, the bridge (transition) reaction, the Krebs cycle and the electron transport chain. The final two steps together comprise aerobic respiration. The total energy yield is 36 to 38 molecules of ATP.
Cellular respiration is a set of metabolic processes. The cells break down the glucose molecule to convert its stored biochemical energy into energy-coin Adenosine triphosphate ( ATP ). It occurs within the cells of all living organisms, including both prokaryotes and eukaryotes.
The second stage of cellular respiration, the Krebs cycle, takes place in the matrix. The third stage, electron transport, takes place on the inner membrane. Figure \(\PageIndex{6}\): The structure of a mitochondrion is defined by an inner and outer membrane.
The second stage of cellular respiration, the Krebs cycle, takes place in the matrix. The third stage, electron transport, takes place on the inner membrane. Summary
The Krebs cycle is also known as Citric Acid Cycle or Tricarboxylic Cycle or TCA cycle. It is the second stage of cellular respiration that occurs in all aerobic organisms to release stored energy for further biological processes.
The end results of the glycolysis steps are transported into the mitochondria of the cell where the rest of the steps of cellular respiration take place. The next steps, like the citric acid cycle and oxidative phosphorylation , occur in the outer and inner membrane of the mitochondria.