Glycogen Biosynthesis

The video explains the role of glycogen as a storage form of glucose, primarily in the liver and muscles, to prevent changes in colligative properties. It details the biosynthesis of glycogen, starting with the enzyme glyco Jenn, which creates a glucose primer. UDP glucose is used for linkage, and glycogen synthase extends the chain. The video also covers the branching of glycogen, facilitated by the glycogen branching enzyme, forming A1 to six linkages. The process helps maintain glucose stability and availability.

What is the primary storage location for glycogen in the human body?

• Brain

• Liver

• Heart

• Kidneys

Why is it important to store glucose as glycogen rather than having free glucose in the body?

• To decrease the van't Hoff factor

• To increase the van't Hoff factor

• To decrease the freezing point

• To increase the boiling point

What enzyme is primarily responsible for the synthesis of glycogen?

• Phosphofructokinase

• Glycogen phosphorylase

• Glycogen synthase

• Hexokinase

What is the role of Glyco Jenn in glycogen synthesis?

• It breaks down glycogen

• It creates a glucose primer

• It converts glucose to fructose

• It phosphorylates glucose

What type of bond is formed between glucose molecules in the initial stages of glycogen synthesis?

• Glycosidic bond

• Hydrogen bond

• Ionic bond

• Peptide bond

What molecule is used as an activated glucose donor in glycogen synthesis?

• UDP glucose

• ADP glucose

• GDP glucose

• CDP glucose

What is the main function of glycogen synthase in glycogen synthesis?

• To phosphorylate glucose

• To break down glycogen

• To convert glucose to fructose

• To extend the glucose chain

What type of linkage is formed by the glycogen branching enzyme?

• Alpha-1,4 linkage

• Alpha-1,6 linkage

• Beta-1,4 linkage

• Beta-1,6 linkage

What is the role of the glycogen branching enzyme?

• To convert glucose to glycogen

• To break down glycogen

• To form branches in glycogen

• To create linear chains of glucose

How does glycogen branching affect the structure of glycogen?

• It makes glycogen more compact

• It makes glycogen more linear

• It decreases the solubility of glycogen

• It increases the solubility of glycogen