In nucleoside, a base is attached at 1' position of sugar moiety. Nucleotide is formed by linking of phosphoric acid unit to the sugar unit of nucleoside. At which position of sugar unit is the phosphoric acid linked in a nucleoside to give a nucleotide?

Explanation

To determine the position at which phosphoric acid is linked to a sugar unit in a nucleoside to form a nucleotide, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Nucleosides**:
- A nucleoside consists of a nitrogenous base (either a purine or a pyrimidine) attached to a sugar molecule (ribose in RNA or deoxyribose in DNA). The nitrogenous base is attached at the 1' position of the sugar.

2. **Formation of Nucleotides**:
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