Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by
1. | base-sugar-phosphate |
2. | base-sugar-OH |
3. | |
4. | sugar-phosphate |
The number of high energy bonds in a molecule of ATP is:
1. | 1 | 2. | 2 |
3. | 3 | 4. | 4 |