18 Questions
In reaction 3 of glycogen synthesis, what type of bond is formed between glucose molecules and the end of a glycogen chain?
α (1 4) glycosidic bond
In glycogenolysis, what is the result of reaction 1?
Glucose molecules are released from the glycogen chain
What is the purpose of the debranching enzyme in glycogenolysis?
To break α (1 6) glycosidic bonds
In reaction 3 of glycogenolysis, what is the outcome of the isomerization reaction?
Glucose-1-phosphate is converted to glucose-6-phosphate
What is the final product of glycogenolysis in liver and kidney cells?
Free glucose
In reaction 1 of glycogenolysis, what is the role of glycogen phosphorylase?
To phosphorylate glucose molecules
What is the result of the oxidation and phosphorylation reaction in reaction 6?
Formation of two molecules of 1,3-bisphosphoglycerate
What is the role of triose phosphate isomerase in reaction 5?
Isomerization of dihydroxyacetone phosphate
What is the net result of reactions 4-6 in terms of energy generation?
Generation of 2 ATP molecules
What is the purpose of the phosphorylation reaction in reaction 7?
To generate ATP molecules
What is the result of the cleavage reaction in reaction 4?
Formation of two three-carbon phosphate isomers
How many carbon atoms from glucose are contained in the two triose phosphates after reaction 5?
6 carbon atoms
What is the type of glycosidic bonds between glucose molecules in glycogen?
α(1 4)-glycosidic bonds
What is the byproduct of the reaction catalyzed by pyrophosphorylase in glycogenesis?
Pyrophosphate, PPi
What happens when energy stores (glycogen) are full?
Additional glucose is converted to triacylglycerols and stored as body fat
What is the first step in glycogen synthesis?
Isomerization of glucose-6-phosphate
What is the energy source for the phosphorylation reaction in glycogenesis?
UTP
What is the enzyme responsible for the isomerization reaction in glycogenesis?
Phosphoglucomutase
Learn about reaction 4 where fructose-1,6-bisphosphate is cleaved into two three-carbon phosphate isomers and reaction 5 where dihydroxyacetone phosphate undergoes isomerization. Understand the enzymes involved in each step.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
