In RNA, Nucleotides are bonded by-

Options

A. H- bonds
B. Phospodiester bonds
C. Ionic bonds
D. Salt linkage

Answer

**Step-by-Step Solution:**

1. **Understanding RNA Structure**:
- RNA (ribonucleic acid) is made up of nucleotides, which are the building blocks of RNA. Each nucleotide consists of a ribose sugar, a phosphate group, and a nitrogenous base.

2. **Identifying the Bonding Mechanism**:
- In RNA, the nucleotides are linked together to form a strand. The question asks about the type of bond that connects these nucleotides.

3. **Types of Bonds in Nucleotides**:
- The options provided include hydrogen bonds, phosphodiester bonds, ionic bonds, and salt linkages.
- Hydrogen bonds occur between the nitrogenous bases of nucleotides (not between the nucleotides themselves).
- Ionic bonds and salt linkages are not relevant to the structure of RNA.

4. **Phosphodiester Bonds**:
- The correct answer is that nucleotides in RNA are bonded by phosphodiester bonds.
- A phosphodiester bond forms between the hydroxyl group of the phosphate group of one nucleotide and the hydroxyl group on the sugar of another nucleotide. This creates a strong covalent bond that links the sugar and phosphate groups, forming the backbone of the RNA strand.

5. **Conclusion**:
- Thus, the nucleotides in RNA are connected by phosphodiester bonds, making option 2 the correct answer.

**Final Answer**: The nucleotides in RNA are bonded by **phosphodiester bonds**.

---