This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of carbohydrate, Subject name: Biochemistry
The energy for glycogenesis is provided by 
Select and explain. 
A. GTP, B. GDP, C. UTP, D. AMP
C: UTP
Answer: C: UTP 
Explanation: UDP glucose is formed from glucose-1-phosphate and UTP (uridine triphosphate) by the enzyme UDP-glucose pyrophosphorylase. UDP-glucose pyrophosphorylase Glucose-1- --------------- UDP-glucose phosphate +UTP + PPiRef: DM Vasudevan, 7th edition, page no: 125