Question

What stage of cellular respiration produces pyruvate as a product?

Answer 1

Cellular respiration:

1. Cellular respiration is a set of metabolic reactions that take place in all living cells to release energy by converting biochemical energy from nutrients into adenosine triphosphate- ATP.
2. Glycolysis is a ten-step multi-enzymatic process occurring in the cytoplasm of all the living cells.
3. First five steps are energy-consuming steps and the next five steps are energy-producing steps.
4. ATP is required in the first half of glycolysis, when glucose is converted to glucose-6-phosphate by the enzyme hexokinase and when fructose-6-phosphate is converted to fructose 1, 6-bisphosphate by the enzyme phosphofructokinase.
5. Two ATP molecules are required for the break down of glucose and four ATP molecules are synthesized.
6. The ATP directly synthesized through glycolysis is called substrate-level ATP.

Stage of cellular respiration that produces pyruvate:

1. Two molecules of pyruvate are produced at the end of glycolysis.
2. Pyruvate is produced by partial oxidation of glucose in the glycolysis process.