Difference between Glycolysis and Krebs cycle
Glycolysis is an anaerobic process while the Krebs cycle is an aerobic process. In the process of glycolysis, glucose is converted into pyruvic acid whereas pyruvic acid obtained in the glycolysis is converted into carbon dioxide and water. In glycolysis, partial oxidation of glucose produces pyruvic acid whereas in the Krebs cycle complete oxidation of pyruvic acid produces carbon dioxide and water. Glycolysis occurs in the cytoplasm of the cell while the Krebs cycle occurs in the mitochondria of the cell. Glycolysis is the first step of respiration whereas the Krebs cycle is the second step of respiration. Glycolysis is a linear sequence and requires does not oxygen whereas Krebs cycle is a cyclic sequence which requires oxygen.
Glycolysis |
Krebs Cycle |
|
---|---|---|
Type of process | It is an anaerobic process. | It is an aerobic process. |
Reactants and resultant products | In this process, glucose is converted into pyruvic acid. | In this process pyruvic acid obtained in glycolysis is converted into carbon dioxide and water. |
Oxidation | Partial oxidation of glucose produces pyruvic acid. | The complete oxidation of pyruvic acid produces carbon dioxide and water. |
Occurs in which part | It occurs in the cytoplasm of the cell. | It occurs in the mitochondria of the cell. |
Type of sequence | It is a linear sequence. | It is the cyclic sequence. |
Oxygen requirement | It does not require oxygen. | It requires oxygen. |
Step of respiration | It is the first step of respiration. | It is the second step of respiration. |
Occurs in which type of organisms | It occurs in all living organisms. | It occurs in the aerobes. |
Difference Between Glycolysis and Krebs Cycle
The main difference between Glycolysis and Krebs Cycle is that: Glycolysis is the first step of respiration in which one molecule of glucose undergoes partial oxidation to produce two molecules of pyruvic acids, ATP, NADH, and water. It is an anaerobic process that occurs in the cytoplasm of the cell. Krebs cycle is the second step of respiration in which the pyruvic acid produced in glycolysis degrades after complete oxidation to produce carbon dioxide and water. It is an aerobic process that occurs in the mitochondria of the cell. Glycolysis is the linear sequence that does not require oxygen whereas the Krebs cycle is a cyclic sequence that requires oxygen.