The enzyme that splits the glucose into two three-carbon sugars

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Multiple Choice

The enzyme that splits the glucose into two three-carbon sugars

Explanation:
Breaking a six-carbon sugar into two three-carbon sugars requires a cleavage of fructose-1,6-bisphosphate between the two ends that will become triose phosphates. The enzyme that does this specific split is aldolase. It catalyzes the breakdown of fructose-1,6-bisphosphate into glyceraldehyde-3-phosphate and dihydroxyacetone phosphate, a pivotal step that sets up the pathway for downstream energy-yielding reactions. The other enzymes perform different tasks: phosphoglucoisomerase rearranges glucose-6-phosphate to fructose-6-phosphate, enolase converts 2-phosphoglycerate to phosphoenolpyruvate, and phosphoglycerate kinase moves a phosphate to ADP to make ATP later in the sequence.

Breaking a six-carbon sugar into two three-carbon sugars requires a cleavage of fructose-1,6-bisphosphate between the two ends that will become triose phosphates. The enzyme that does this specific split is aldolase. It catalyzes the breakdown of fructose-1,6-bisphosphate into glyceraldehyde-3-phosphate and dihydroxyacetone phosphate, a pivotal step that sets up the pathway for downstream energy-yielding reactions. The other enzymes perform different tasks: phosphoglucoisomerase rearranges glucose-6-phosphate to fructose-6-phosphate, enolase converts 2-phosphoglycerate to phosphoenolpyruvate, and phosphoglycerate kinase moves a phosphate to ADP to make ATP later in the sequence.

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