Give an account of glycolysis.where does it occurs?what are the end products?raise the fate of theses products in both aerobic and anaerobic respiration.in easy method
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BIOLOGY
Give an account of glycolysis. Where does it occur? What are the end products? Trace the fate of these products in both aerobic and anaerobic respiration.
October 15, 2019avatar
Kelzang Sayied
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The process by which the glucose (6C compound) is split into two molecules of pyruvic acid (3C compound) is called glycolysis or EMP pathway. The glucose is broken down anaerobically to form pyruvic acid. The pyruvic acid enters the Krebs cycle. Glycolysis occurs in the cytoplasm of the cell.
The pyruvic acid is the end product of this process. There are two molecules of pyruvic acid formed at the end of this pathway. There are two fates of the pyruvic acid. During the aerobic respiration, the molecule enters the Krebs cycle and the electron transport chain. There are 38 ATP molecules formed from the aerobic respiration. During the anaerobic respiration, the molecule is broken down to form lactic acid or alcohol. There are 2 ATP molecules produced in this process.
Answer:
Pyruvic acid is formed in the process of glycolysis due to the breakdown of glucose which takes place in the cytoplasm of the cell. This process also involves partial oxidation of glucose molecules known as the EMP pathway. The important steps involved in the process of glycolysis are as follows:
- Phosphorylation of glucose for the production of glucose-6-phosphate
- Formation of PGAL (Phosphoglyceraldehyde) through the conversion of Fructose-6-phosphate
- The molecules of PGAL are further processed for the production of Pyruvic acid.
- Two molecules of ATP are gained in the process of glycolysis of one glucose molecule
Aerobic Respiration of Pyruvate:
Complete oxidation of Pyruvic acid takes place and carbon dioxide and Energy is produced as a result of this reaction.
Anaerobic Respiration Pyruvate:
In the absence of oxygen Anaerobic Respiration takes place, and ethanol and CO2 are produced from the conversion of pyruvic acid. In some organisms who face a complete absence of oxygen, the pyruvic acid can also be converted to lactic acid.