Multiple Choice
In a eukaryotic cell, the reactions of glycolysis occur in which cellular location?
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Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway
Glycolysis 1
Multiple Choice
Which of the following is NOT required for glycolysis to occur in the cytosol?
A
Glucose
B
ATP
C
NAD
D
Molecular oxygen (O)
Verified step by step guidance1
Step 1: Understand the process of glycolysis. Glycolysis is the metabolic pathway that breaks down glucose into pyruvate, producing ATP and NADH in the cytosol of the cell.
Step 2: Identify the essential substrates and cofactors required for glycolysis. These include glucose (the starting molecule), ATP (used in the initial steps to phosphorylate glucose), and NAD+ (which acts as an electron acceptor to form NADH).
Step 3: Recognize that glycolysis is an anaerobic process, meaning it does not require molecular oxygen (O\_2) to proceed. Oxygen is not directly involved in the enzymatic steps of glycolysis.
Step 4: Compare the options given: glucose, ATP, NAD+, and molecular oxygen. Since glycolysis occurs without oxygen, molecular oxygen is not required for glycolysis to occur in the cytosol.
Step 5: Conclude that the correct answer is molecular oxygen (O\_2) because it is not necessary for glycolysis, unlike glucose, ATP, and NAD+ which are all required.
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