Multiple Choice
How many molecules of glyceraldehyde-3-phosphate (G3P) are needed to synthesize one molecule of glucose during glycolysis?
33. The Organic Chemistry of Metabolic Pathways
Glycolysis Summary
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Why is glycolysis considered an anaerobic process?
A
It takes place in the mitochondria where oxygen is not present.
B
It occurs in the absence of oxygen and does not require oxygen to proceed.
C
It produces carbon dioxide as a byproduct.
D
It directly uses oxygen to convert glucose into pyruvate.
Verified step by step guidance1
Understand the definition of glycolysis: Glycolysis is the metabolic pathway that converts glucose into pyruvate, releasing energy in the form of ATP.
Identify the location of glycolysis: Glycolysis occurs in the cytoplasm of the cell, not in the mitochondria.
Clarify the role of oxygen in glycolysis: Glycolysis does not require oxygen to proceed, which is why it is considered an anaerobic process.
Examine the byproducts of glycolysis: Glycolysis does not produce carbon dioxide as a byproduct; instead, it produces pyruvate and ATP.
Differentiate glycolysis from aerobic processes: Unlike aerobic processes that require oxygen, glycolysis can occur in the absence of oxygen, making it anaerobic.
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