Textbook Question
Glucose 6-phosphate is in a pivotal position in metabolism. Depending on conditions, glucose 6-phosphate follows one of several pathways. Under what conditions do the following occur?
d. Glycogenesis
Ch.22 Carbohydrate Metabolism
McMurry8th EditionFundamentals of GOBISBN: 9780134015187
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Table of contents
- Ch.1 Matter and Measurements27
- Ch.2 Atoms and the Periodic Table20
- Ch.3 Ionic Compounds8
- Ch.4 Molecular Compounds23
- Ch.5 Classification & Balancing of Chemical Reactions12
- Ch.6 Chemical Reactions: Mole and Mass Relationships28
- Ch.7 Chemical Reactions: Energy, Rate and Equilibrium64
- Ch.8 Gases, Liquids and Solids24
- Ch.9 Solutions52
- Ch.10 Acids and Bases25
- Ch.11 Nuclear Chemistry22
- Ch.12 Introduction to Organic Chemistry: Alkanes57
- Ch.13 Alkenes, Alkynes, and Aromatic Compounds47
- Ch.14 Some Compounds with Oxygen, Sulfur, or a Halogen50
- Ch.15 Aldehydes and Ketones45
- Ch.16 Amines42
- Ch.17 Carboxylic Acids and Their Derivatives57
- Ch.18 Amino Acids and Proteins82
- Ch.19 Enzymes and Vitamins63
- Ch.20 Carbohydrates44
- Ch.21 The Generation of Biochemical Energy65
- Ch.22 Carbohydrate Metabolism45
- Ch.23 Lipids42
- Ch.24 Lipid Metabolism33
- Ch.25 Protein and Amino Acid Metabolism24
- Ch.26 Nucleic Acids and Protein Synthesis45
Chapter 22, Problem 19
What two types of reactions convert glycerol to dihydroxyacetone phosphate?
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Understand the context: Glycerol is a three-carbon molecule that can be converted into dihydroxyacetone phosphate (DHAP), an intermediate in glycolysis. This conversion involves two key types of reactions: oxidation and phosphorylation.
Step 1: Oxidation of glycerol to glycerol-3-phosphate. This reaction is catalyzed by the enzyme glycerol kinase, which uses ATP as a phosphate donor. The reaction can be represented as: ..
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Glycolysis
Glycolysis is a metabolic pathway that converts glucose into pyruvate, producing ATP and NADH in the process. It involves a series of enzymatic reactions and is crucial for cellular respiration. Understanding glycolysis is essential for comprehending how glycerol can be converted into intermediates like dihydroxyacetone phosphate (DHAP) through specific enzymatic steps.
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1:26
Glycolysis Concept 5
Glycerol Metabolism
Glycerol metabolism refers to the biochemical processes that convert glycerol into usable energy forms. Glycerol can be phosphorylated to glycerol-3-phosphate and subsequently converted into DHAP through the action of specific enzymes. This pathway is significant in energy production, especially during fasting or low-carbohydrate conditions.
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1:20Glycerol Metabolism Concept 2
Enzymatic Reactions
Enzymatic reactions are biochemical processes facilitated by enzymes, which are proteins that speed up chemical reactions in the body. In the conversion of glycerol to DHAP, specific enzymes such as glycerol kinase and triose phosphate isomerase play critical roles. Understanding these reactions is vital for grasping how glycerol is transformed into metabolic intermediates.
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Related Practice
Textbook Question
In alcoholic fermentation, each mole of pyruvate is converted to one mole of carbon dioxide and one mole of ethanol. In the process, about 50 kcal/mol (209 kJ/mol) of energy is produced. Under the most favorable conditions, more than one-half of this energy is stored as ATP.
a. What happens to the remaining energy produced in alcoholic fermentation?
Textbook Question
Pyruvate has three different fates. What are the three different molecules pyruvate is converted into? What conditions exist for the formation of each product?
Textbook Question
Glycolysis of one molecule of glucose produces 8 ATP molecules. How many ATP molecules are produced from glycolysis of 10 glucose molecules?
Textbook Question
What is the purpose of the Cori cycle?
Textbook Question
Glucose 6-phosphate is in a pivotal position in metabolism. Depending on conditions, glucose 6-phosphate follows one of several pathways. Under what conditions do the following occur?
b. Hydrolysis to free glucose