Choose the correct option w.r.t RNA.

Options

A. Presence of thymine in place of uracil
B. Absence of free 2'OH in sugar
C. Mutates at faster rate
D. Is non-catalytic

Answer

### Step-by-Step Solution

1. **Understanding RNA**: RNA, or ribonucleic acid, is a nucleic acid that plays a crucial role in various biological processes, particularly in protein synthesis.

2. **Structure of RNA**: RNA is typically a single-stranded molecule, unlike DNA, which is double-stranded. This single-stranded nature contributes to its reactivity and instability.

3. **Base Composition**: In RNA, the base uracil replaces thymine, which is found in DNA. This is a key distinguishing feature of RNA.

4. **Sugar Component**: The sugar in RNA is ribose, which contains a hydroxyl (OH) group at the 2' position, making it different from the deoxyribose sugar found in DNA.

5. **Reactivity and Stability**: RNA is more reactive and less stable than DNA, which can lead to a higher mutation rate. This is partly due to its single-stranded structure and the presence of the hydroxyl group.

6. **Catalytic Role**: RNA can act as a catalyst in biochemical reactions, such as the formation of peptide bonds during protein synthesis. This property is significant in the context of ribozymes, which are RNA molecules with catalytic activity.

7. **Analyzing the Options**:
- **Option 1**: "Presence of thymine in place of uracil" - Incorrect, as RNA contains uracil instead of thymine.
- **Option 2**: "Absence of free 2-OH in sugar" - Incorrect, as RNA has a free 2-OH group in its ribose sugar.
- **Option 3**: "Mutates at a faster rate" - Correct, due to its single-stranded nature and reactivity.
- **Option 4**: "It is non-catalytic" - Incorrect, as RNA can act as a catalyst in various biochemical reactions.

8. **Conclusion**: The correct option regarding RNA is that it mutates at a faster rate.

### Final Answer
The correct option with respect to RNA is: **"Mutates at a faster rate."**

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