glycogen structre (2)

Q: What type of molecule is glycogen?

A: A highly branched polysaccharide composed of glucose molecules.

what are the 2 types bonds in the structure of glycogen

• Alpha-1,4 glycosidic bonds → chain bonds

• Alpha-1,6 glycosidic bonds → branching bonds

What is the function of alpha-1,4 glycosidic bonds in glycogen

A: They connect glucose molecules in the main, linear chains.

Q: Which carbon atoms are connected by an alpha-1,4 glycosidic bond?

Connects C1 of one glucose to C4 of the next glucose

Q: What is the function of alpha-1,6 glycosidic bonds in glycogen?

Form at branch points in glycogen molecule

Q: Which carbon atoms are connected by an alpha-1,6 glycosidic bond?

A: Carbon 1 of one glucose connects to carbon 6 of another glucose.

Q: Approximately how often does glycogen branch?

A: Approximately every 8–12 glucose residues.

Q: Why is glycogen's branched structure useful?

A: It provides many chain ends where glucose can be added or removed, supporting rapid glycogen synthesis and breakdown.

Q: What protein forms the central core of a glycogen molecule?

Glycogenin

Q: What does it mean that glycogen is hydrated?

A: Water is associated with stored glycogen; approximately 3–4 g of water accompany each gram of glycogen.

Q: If 100 g of glycogen is stored, approximately how much associated water is present?

A: Approximately 300–400 g of water.

Q: How many grams of carbohydrate provide 2,000 calories if carbohydrate provides 4 calories per gram?

2000 / 4 = 500 g of carbs