Which of the following life processes is evolved around RNA ?

Options

A. Metabolism
B. Translation
C. Splicing
D. all of these.

Explanation

To solve the question "Which of the following life processes is evolved around RNA?", we will analyze each option provided and determine their relationship with RNA.

### Step-by-Step Solution:

1. **Understanding the Options**: The options given are:
- Metabolism
- Translation
- Splicing
- All of these

2. **Defining Each Process**:
- **Metabolism**: This refers to all the chemical reactions that occur within a living organism to maintain life. It includes both catabolic and anabolic reactions.
- **Translation**: This is the process by which ribosomes synthesize proteins based on the sequence of the messenger RNA (mRNA) that was transcribed from DNA.
- **Splicing**: This is the process of removing non-coding regions (introns) from pre-mRNA and joining the coding regions (exons) together. This process occurs in the nucleus after transcription.

3. **Role of RNA in Each Process**:
- **Metabolism**: While metabolism involves many biochemical pathways, some of these processes are mediated by RNA molecules, particularly in the context of RNA's role in catalyzing reactions (ribozymes).
- **Translation**: This process is directly dependent on RNA, as mRNA is translated into proteins by ribosomes.
- **Splicing**: This process is also RNA-dependent, as it involves the processing of pre-mRNA, which is an RNA molecule.

4. **Conclusion**: All three processes—metabolism, translation, and splicing—are fundamentally linked to RNA. Therefore, the correct answer is:
- **All of these (Option 4)**.

### Final Answer:
The life processes that evolved around RNA include metabolism, translation, and splicing. Thus, the correct answer is **All of these**.

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