Glycogen polysaccharide is synthesized from the active form of glucose. The immediate donor of glucose residues during the glycogenesis is:

Answer options

1. Glucose-6-phosphate
2. Glucose-3-phosphate
3. ADP-glucose
4. UDP-glucose
5. Glucose-1-phosphate

Explanation

UDP glucose is a precursor of glycogen and can be converted into UDP galactose and UDP glucuronic acid which can be used as substrates by the enzyme that makes polysaccharides.