Questions and Answers
What is the result of Step 1 of Glycolysis?
Glucose 6-phosphate + ADP + H+
What enzyme is involved in Step 1 of Glycolysis?
Hexokinase
What happens in Step 2 of Glycolysis?
Glucose 6-Phosphate changes to form Fructose 6-phosphate
What is the enzyme for Step 2 of Glycolysis?
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What is the outcome of Step 3 of Glycolysis?
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What enzyme is used in Step 3 of Glycolysis?
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What occurs during Step 4 of Glycolysis?
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What enzyme is associated with Step 4 of Glycolysis?
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What happens in Step 5 of Glycolysis?
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What enzyme is used in Step 5 of Glycolysis?
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What is the result of Step 6 of Glycolysis?
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What enzyme is involved in Step 6 of Glycolysis?
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What happens in Step 7 of Glycolysis?
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What is the enzyme for Step 7 of Glycolysis?
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What is the outcome of Step 8 of Glycolysis?
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What enzyme regulates Step 8 of Glycolysis?
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What occurs in Step 9 of Glycolysis?
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What is the enzyme for Step 9 of Glycolysis?
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What is the final product of Step 10 of Glycolysis?
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What enzyme is associated with Step 10 of Glycolysis?
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Study Notes
Glycolysis Overview
- Glycolysis is a metabolic pathway that converts glucose into pyruvate, producing energy in the form of ATP.
- It involves ten sequential steps, each catalyzed by specific enzymes.
Step 1
- Conversion of glucose and ATP to glucose 6-phosphate, ADP, and H+.
- Enzyme involved: Hexokinase.
Step 2
- Glucose 6-phosphate is converted into fructose 6-phosphate.
- Enzyme involved: Phosphoglucose Isomerase.
Step 3
- Reaction of fructose 6-phosphate with ATP produces fructose 1,6-bisphosphate, ADP, and H+.
- Enzyme involved: Phosphofructokinase.
Step 4
- Fructose 1,6-bisphosphate cleaves into glyceraldehyde 3-phosphate and dihydroxyacetone phosphate.
- Enzyme involved: Aldolase.
Step 5
- Dihydroxyacetone phosphate is rearranged to form glyceraldehyde 3-phosphate.
- Enzyme involved: Triose Phosphate Isomerase.
Step 6
- Glyceraldehyde 3-phosphate reacts with NAD+ and a phosphate group to produce 1,3-bisphosphoglycerate, NADH, and H+.
- Enzyme involved: Triose Phosphate Dehydrogenase.
Step 7
- 1,3-bisphosphoglycerate donates a phosphate group to ADP, forming 3-phosphoglycerate and ATP.
- Enzyme involved: Phosphoglycerate Kinase.
Step 8
- 3-phosphoglycerate is rearranged to yield 2-phosphoglycerate.
- Enzyme involved: Phosphoglycerate Mutase.
Step 9
- 2-phosphoglycerate is converted into phosphoenolpyruvate and a water molecule.
- Enzyme involved: Enolase.
Step 10
- Final step where phosphoenolpyruvate reacts with ADP and H+ to form pyruvate and ATP.
- Enzyme involved: Pyruvate Kinase.
Importance of Glycolysis
- Glycolysis provides a quick source of energy and is crucial for cellular respiration and metabolism.
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Description
This quiz covers the metabolic pathway of glycolysis, detailing the transformation of glucose into pyruvate through ten specific steps. Each step is catalyzed by unique enzymes, and understanding these reactions is crucial for mastering basic biochemistry. Test your knowledge on the key components and processes involved in glycolysis.
