Multiple Choice
In cellular metabolism, what is the main function of glycolysis?
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Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway
Glycolysis 1
Multiple Choice
In the glycolytic pathway, what is the initial substrate molecule that enters glycolysis?
A
Pyruvate
B
Glycogen
C
Glucose
D
Acetyl-CoA
Verified step by step guidance1
Understand that glycolysis is the metabolic pathway that breaks down glucose to produce energy in the form of ATP.
Identify the molecule that enters the glycolytic pathway at the very beginning; glycolysis starts with a six-carbon sugar molecule.
Recall that pyruvate is actually the end product of glycolysis, not the starting substrate.
Recognize that glycogen is a storage form of glucose and must be broken down into glucose molecules before entering glycolysis.
Conclude that the initial substrate molecule entering glycolysis is glucose, which undergoes a series of enzymatic reactions to be converted into pyruvate.
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