What is the process of cellular respiration??
Answers
Answer:
Cellular respiration is the process that occurs in the mitochondria of organisms (animals and plants) to break down sugar in the presence of oxygen to release energy in the form of ATP. This process releases carbon dioxide and water as waste products.
Answer:The process of glycolysis is an enzyme controlled, four-step reaction that occurs in the cytoplasm of the cells:
Energy is required to begin the process, so a molecule of glucose accepts two high-energy phosphate groups from two ATP molecules.
The resulting intermediary molecule immediately divides into two, three-carbon molecules called PGAL, each containing a high-energy phosphate group.
A second high-energy phosphate group is added to the three-carbon PGAL molecule and two NADH molecules are produced.
Finally, the three-carbon PGAL molecules donate their high-energy phosphate to create ATP and the three-carbon pyruvate forms as the final products.
Explanation:
The high-energy phosphate groups added in Steps 1 and 3 are removed in Step 4 to create four ATP (two from Step 1 and two from Step 3) from four ADP. Because two ATP molecules were required to begin glycolysis and four were produced in the final step, the net gain is two ATP molecules. Although ATP is produced, glycolysis does not produce enough energy to sustain their life cycles for complex life forms. Therefore, the main purpose of glycolysis is to produce high-energy electrons for use in the electron transport chain. The final product, pyruvate or pyruvic acid, still contains energy that can be harvested in two ways depending on the availability of oxygen.