Multiple Choice
In glycolysis, which molecule is oxidized and broken down to ultimately yield two 3-carbon molecules (pyruvate) while reducing to ?
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Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway
Glycolysis 1
Multiple Choice
In glycolysis (conversion of 1 glucose to 2 pyruvate), how many molecules of FADH2 are produced?
A
1
B
0
C
2
D
4
Verified step by step guidance1
Recall the main stages of glycolysis, which is the metabolic pathway that converts one molecule of glucose into two molecules of pyruvate.
Understand that glycolysis primarily involves the oxidation of glucose and the production of ATP and NADH, but not FADH2.
Identify the electron carriers involved in glycolysis: NAD+ is reduced to NADH during the conversion of glyceraldehyde-3-phosphate to 1,3-bisphosphoglycerate.
Recognize that FADH2 is typically produced in other metabolic pathways such as the Krebs cycle (citric acid cycle), not in glycolysis.
Conclude that since glycolysis does not involve any step where FAD is reduced to FADH2, the number of FADH2 molecules produced per glucose molecule in glycolysis is zero.
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