Multiple Choice
In a typical eukaryotic cell, where does glycolysis primarily occur?
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Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway
Glycolysis 1
Multiple Choice
In glycolysis (per molecule of glucose), what is the final carbon product formed at the end of the pathway?
A
Two molecules of lactate
B
Two molecules of pyruvate
C
Two molecules of acetyl-CoA
D
One molecule of citrate
Verified step by step guidance1
Recall that glycolysis is the metabolic pathway that breaks down one molecule of glucose (a 6-carbon sugar) into two molecules of a 3-carbon compound.
Identify the main end product of glycolysis before any further metabolic processing occurs. Glycolysis converts glucose into two molecules of pyruvate, each containing 3 carbons.
Understand that pyruvate can be further metabolized under different conditions: under aerobic conditions, pyruvate enters the mitochondria and is converted into acetyl-CoA; under anaerobic conditions, pyruvate can be reduced to lactate.
Note that the question specifically asks for the final carbon product formed at the end of glycolysis itself, not after subsequent metabolic steps like the citric acid cycle or fermentation.
Therefore, the correct final carbon product of glycolysis per molecule of glucose is two molecules of pyruvate.
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