The number of oxygen atoms present in a nucleotide formed from a base, that is present only in RNA is .

Question

The number of oxygen atoms present in a nucleotide formed from a base, that is present only in RNA is  .

Canvas Classes · Accepted Answer

Base present only in RNA: Uracil (Thymine is in DNA; Uracil replaces Thymine in RNA)

Nucleotide = Base + Sugar + Phosphate group

For RNA, the nucleotide is a ribonucleotide (contains ribose sugar).

Uridine 5'-monophosphate (UMP) structure:

| Component | Oxygen atoms |
|---|---|
| Uracil () | 2 (two C=O groups) |
| Ribose ( in ring form) | 4 (ring O + three –OH groups) |
| Phosphate () | 4 (but one O bridges to sugar C5') |

Counting oxygens in UMP:

- Uracil: 2 O (two carbonyl oxygens)
- Rib

More questions from Biomolecules