Multiple Choice
In the glycolysis pathway, how many molecules of glyceraldehyde-3-phosphate (G3P) are used to form one molecule of glucose?
33. The Organic Chemistry of Metabolic Pathways
Glycolysis Summary
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What is the net gain of ATP at the end of glycolysis?
A
2 ATP
B
6 ATP
C
8 ATP
D
4 ATP
Verified step by step guidance1
Understand the process of glycolysis: Glycolysis is the metabolic pathway that converts glucose into pyruvate, releasing energy and producing ATP in the process.
Identify the stages of glycolysis: Glycolysis consists of two main phases - the energy investment phase and the energy payoff phase.
Calculate ATP consumption: In the energy investment phase, 2 ATP molecules are used to phosphorylate glucose and its intermediates.
Calculate ATP production: In the energy payoff phase, 4 ATP molecules are produced through substrate-level phosphorylation.
Determine the net gain of ATP: Subtract the ATP consumed from the ATP produced to find the net gain. Use the formula: ATP.
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