Multiple Choice
During glycolysis, one molecule of glucose is ultimately broken down into which product(s)?
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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 3-carbon end product formed at the end of the pathway?
A
Lactate
B
Acetyl-CoA
C
Pyruvate
D
Oxaloacetate
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 key intermediate molecules formed during glycolysis, focusing on the end products after the series of enzymatic reactions.
Understand that glycolysis converts glucose into two molecules of pyruvate, which is a 3-carbon compound and the final product of the pathway under aerobic conditions.
Note that lactate is formed from pyruvate under anaerobic conditions (fermentation), acetyl-CoA is formed from pyruvate during the link reaction before the Krebs cycle, and oxaloacetate is a 4-carbon molecule involved in the Krebs cycle, not glycolysis.
Conclude that the final 3-carbon end product formed at the end of glycolysis per molecule of glucose is pyruvate.
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