2 ATP
Glycolysis uses 2 ATP molecules in the first half, called the Energy Investment Phase, and creates 4 ATP molecules in the second half, the Energy Payoff Phase. So -2 + 4 = a net gain of 2 ATP molecules.
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Each molecule of glucose entering glycolysis results in a net gain of 2 molecules of ATP through substrate-level phosphorylation. Additionally, 2 molecules of NADH are produced, which can go on to donate electrons to the electron transport chain for further ATP synthesis.
The net gain is 2 ATP. You use up 2 ATP in glycolysis, but also produce 2 ATP of each pyruvate. Since there are 2 pyruvate, glycolysis produces 4 ATP, and uses up 2 ATP, amounting to a net gain of 2 ATP.
Glycolysis produces a net gain of what ATP molecules. ATP is commonly used as storage for cellular energy which is later released and broken down for various cellular activities.
2
These are produced by substrate level phosphorilation. Net gain is two as two is used
Glycolysis results in a net gain of two molecules of ATP for each molecule of glucose.
Acetyl coenzyme A is produced twice from one molecule of glucose in the process of glycolysis and the citric acid cycle. Each glucose molecule is broken down into two molecules of pyruvate during glycolysis, and each pyruvate molecule is converted to one molecule of acetyl CoA before entering the citric acid cycle.
For every molecule of pyruvate entering the Krebs cycle, 3 molecules of CO2 are released. Since each glucose molecule produces 2 molecules of pyruvate through glycolysis, the total number of CO2 molecules released per glucose molecule in the Krebs cycle is 6.
Approximately 30-32 molecules of ATP are produced by oxidative phosphorylation for each glucose molecule that enters glycolysis.
The maximum number of ATP molecules that can be produced from each glucose molecule in aerobic respiration is 36-38 ATP molecules. This occurs through glycolysis, the citric acid cycle, and the electron transport chain.
twice