This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of nucleic acids, Subject name: Biochemistry
The most abundant nucleotide in body is 
Select and explain. 
A. ATP, B. GTP, C. UTP, D. DTP
A: ATP
Answer: A: ATP 
Explanation: NUCLEOSIDE TRIPHOSPHATE: Corresponding nucleoside di- and tri-phosphates are formed by esterification of fuher phosphate groups to the existing ons. Nucleside diphosphate contains one high energy bond and triphosphates have 2 high energy bonds.ATP is the UNIVERSAL ENERGY CURRENCY. It is formed during oxidative processes by trapping the released energy in the high energy phosphate bond. REF :DM VASUDEVAN TEXTBOOK , 7TH EDITION ; Page no :562.