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The Glycolytic Pathway

publish date: 2026/06/20 09:53:9.918882 UTC

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Glycolysis Pathway Simplified Schematic of Ecosystem Respiration Phase Glucose (6-Carbon) Investment: 1 ATP Glucose 6-phosphate Fructose 6-phosphate Investment: 2nd ATP Fructose 1,6-bisphosphate Splits into two 3-Carbon Sugar Pathways G3P / PGAL (3-Carbon) 1,3-Bisphosphoglycerate G3P / PGAL (3-Carbon) 1,3-Bisphosphoglycerate Produces NADH & ATP Produces NADH & ATP Generates 2 ATP Generates 2 ATP Pyruvate (3-Carbon) Pyruvate (3-Carbon)

Based on the diagram, how many 3-carbon pyruvate molecules are ultimately produced from one molecule of glucose during glycolysis?

Correct Answer

Two

Explanation

Glucose, a 6-carbon sugar, is split early in glycolysis into two 3-carbon fragments. Both fragments are eventually converted into pyruvate, yielding two pyruvate molecules per glucose molecule.

Reference

Biology: A self-teaching guide

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