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Multiple Choice
What is the end product after glucose undergoes glycolysis?
A
Lactate
B
Acetyl-CoA
C
Pyruvate
D
Glucose-6-phosphate
Verified step by step guidance
1
Begin by understanding the process of glycolysis, which is the metabolic pathway that converts glucose into pyruvate. This process occurs in the cytoplasm of cells and involves a series of ten enzyme-catalyzed reactions.
The first step in glycolysis is the phosphorylation of glucose to form glucose-6-phosphate. This reaction is catalyzed by the enzyme hexokinase and requires ATP.
Next, glucose-6-phosphate is isomerized to fructose-6-phosphate by the enzyme phosphoglucose isomerase.
Fructose-6-phosphate is then phosphorylated to fructose-1,6-bisphosphate by the enzyme phosphofructokinase, using another molecule of ATP.
Through a series of subsequent reactions, fructose-1,6-bisphosphate is eventually converted into two molecules of pyruvate, which is the end product of glycolysis. Pyruvate can then enter the mitochondria for further energy production processes such as the citric acid cycle.