Glycogenesis Pathway EXPLAINED

The video explains the process of glycogen synthesis, starting with the formation of UDP glucose from glucose 6 phosphate. It highlights the role of glycogenin as a primer for glycogen polymerization and the function of glycogen synthase in adding glucose units. The video also covers the branching of glycogen, facilitated by the glycogen branching enzyme, and discusses the structure of glycogen and its importance in energy release during glycogenolysis.

What is the initial substrate for the formation of UDP-glucose in glycogen synthesis?

• Fructose 1,6-bisphosphate

• Glucose 6-phosphate

• Fructose 6-phosphate

• Glucose 1-phosphate

Which enzyme is responsible for converting glucose 6-phosphate to glucose 1-phosphate?

• Glucokinase

• Glycogen synthase

• Phosphoglucomutase

• Hexokinase

What is the role of glycogenin in glycogen synthesis?

• It acts as a primer for glycogen polymerization.

• It converts glucose 6-phosphate to glucose 1-phosphate.

• It breaks down glycogen into glucose.

• It adds branches to the glycogen molecule.

How many glucose units can glycogenin add before glycogen synthase takes over?

• Four

• One

• Three

• Two

What type of linkages does glycogen synthase create in glycogen?

• 1-6 linkages

• 1-4 linkages

• 1-3 linkages

• 1-2 linkages

Which enzyme is responsible for creating branches in glycogen?

• Glycogen synthase

• Glycogen phosphorylase

• Phosphoglucomutase

• Glycogen branching enzyme

Why is branching important in the structure of glycogen?

• It increases the solubility of glycogen.

• It allows for faster glucose release during glycogenolysis.

• It stabilizes the glycogen molecule.

• It prevents glycogen from being broken down.