Glycolysis Overview and Steps
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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?

<p>Phosphoglucose Isomerase</p> Signup and view all the answers

What is the outcome of Step 3 of Glycolysis?

<p>Fructose 1,6-biphosphate + ADP + H+</p> Signup and view all the answers

What enzyme is used in Step 3 of Glycolysis?

<p>Phosphofructokinase</p> Signup and view all the answers

What occurs during Step 4 of Glycolysis?

<p>Fructose 1,6-biphosphate splits to form glyceraldehyde 3-phosphate + dihydroxyacetone phosphate</p> Signup and view all the answers

What enzyme is associated with Step 4 of Glycolysis?

<p>Aldolase</p> Signup and view all the answers

What happens in Step 5 of Glycolysis?

<p>Dihydroxyacetone phosphate rearranges to form glyceraldehyde 3-phosphate</p> Signup and view all the answers

What enzyme is used in Step 5 of Glycolysis?

<p>Triose Phosphate Isomerase</p> Signup and view all the answers

What is the result of Step 6 of Glycolysis?

<p>1,3-biphosphoglycerate + NADH + H+</p> Signup and view all the answers

What enzyme is involved in Step 6 of Glycolysis?

<p>Triose Phosphate Dehydrogenase</p> Signup and view all the answers

What happens in Step 7 of Glycolysis?

<p>3-phosphoglycerate + ATP</p> Signup and view all the answers

What is the enzyme for Step 7 of Glycolysis?

<p>Phosphoglycerate Kinase</p> Signup and view all the answers

What is the outcome of Step 8 of Glycolysis?

<p>2-phosphoglycerate</p> Signup and view all the answers

What enzyme regulates Step 8 of Glycolysis?

<p>Phosphoglycerate Mutase</p> Signup and view all the answers

What occurs in Step 9 of Glycolysis?

<p>Water molecule and phosphoenolpyruvate</p> Signup and view all the answers

What is the enzyme for Step 9 of Glycolysis?

<p>Enolase</p> Signup and view all the answers

What is the final product of Step 10 of Glycolysis?

<p>Pyruvate + ATP</p> Signup and view all the answers

What enzyme is associated with Step 10 of Glycolysis?

<p>Pyruvate Kinase</p> Signup and view all the answers

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.

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