Question

How many ATP are used and made in glycolysis, the Krebs cycle and the electron transport chain?

Answer 1

Glycolysis:

1. Glucose is the carbohydrate that provides the most easily available energy in our bodies.
2. It is broken down in our cells to create energy in the form of ATP. Carbohydrate metabolism refers to the entire process of forming, breaking down, and converting glucose into numerous compounds.
3. The key processes in carbohydrate metabolism include glycolysis, the Krebs cycle, and the electron transport chain. ATP or another kind of energy is created or utilized in all of the cycles.
4. Pyruvic acid is converted to carbon dioxide in the Krebs cycle.
5. For every glucose molecule that enters glycolysis, this creates 2 ATP and 6 NADH. The majority of the energy is in the electron transport chain ( 34 ATP molecules, compared to only 2 ATP for glycolysis and 2 ATP for Krebs cycle). In the mitochondria, the electron transport chain occurs.
6. This step transforms NADH into ATP. In glycolysis, glucose (6 carbon atoms) is divided into two molecules of pyruvic acid (3 carbons each). This yields 2 ATP and 2 NADH.