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What is the first step in glycolysis ?
- a)phosphorylation of glucose
- b)breakdown of glucose
- c)conversion of glucose into fructose
- d)dehydrogenation of glucose
Correct answer is option 'A'. Can you explain this answer?
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What is the first step in glycolysis ?a)phosphorylation of glucoseb)br...
The First Step in Glycolysis
The first step in glycolysis is the phosphorylation of glucose. This process occurs in the cytoplasm of the cell and is catalyzed by an enzyme called hexokinase.
Explanation
The process of glycolysis is a pathway that breaks down glucose into two molecules of pyruvate. This pathway is important because it provides energy for the cell in the form of ATP.
The first step in glycolysis involves converting glucose into glucose-6-phosphate by adding a phosphate group to the sixth carbon of glucose. This is known as the phosphorylation of glucose.
Hexokinase is the enzyme responsible for catalyzing this reaction. It uses ATP as a source of energy to transfer a phosphate group from ATP to glucose, forming glucose-6-phosphate.
This step is important because it traps glucose inside the cell and prepares it for further processing in the glycolytic pathway. Once glucose is phosphorylated, it cannot diffuse out of the cell, and it is also a substrate for other enzymes involved in glycolysis.
Conclusion
In summary, the first step in glycolysis is the phosphorylation of glucose by hexokinase, which converts glucose into glucose-6-phosphate. This step is crucial for trapping glucose inside the cell, preparing it for further processing, and providing energy for the cell in the form of ATP.
The first step in glycolysis is the phosphorylation of glucose. This process occurs in the cytoplasm of the cell and is catalyzed by an enzyme called hexokinase.
Explanation
The process of glycolysis is a pathway that breaks down glucose into two molecules of pyruvate. This pathway is important because it provides energy for the cell in the form of ATP.
The first step in glycolysis involves converting glucose into glucose-6-phosphate by adding a phosphate group to the sixth carbon of glucose. This is known as the phosphorylation of glucose.
Hexokinase is the enzyme responsible for catalyzing this reaction. It uses ATP as a source of energy to transfer a phosphate group from ATP to glucose, forming glucose-6-phosphate.
This step is important because it traps glucose inside the cell and prepares it for further processing in the glycolytic pathway. Once glucose is phosphorylated, it cannot diffuse out of the cell, and it is also a substrate for other enzymes involved in glycolysis.
Conclusion
In summary, the first step in glycolysis is the phosphorylation of glucose by hexokinase, which converts glucose into glucose-6-phosphate. This step is crucial for trapping glucose inside the cell, preparing it for further processing, and providing energy for the cell in the form of ATP.
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What is the first step in glycolysis ?a)phosphorylation of glucoseb)br...
Phosorylation means addition of phosphate?
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What is the first step in glycolysis ?a)phosphorylation of glucoseb)breakdown of glucosec)conversion of glucose into fructosed)dehydrogenation of glucoseCorrect answer is option 'A'. Can you explain this answer?
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