What do you understand by 5' end and 3 end?

Explanation

To understand the concept of 5' end and 3' end in DNA, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understanding DNA Structure**:
- DNA is a polynucleotide molecule made up of three main components: nitrogenous bases (A, T, G, C), deoxyribose sugar, and phosphate groups.

2. **Identifying the Sugar Structure**:
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