Which one of the following is wrongly matched?

Options

A. Operon - Structural genes, operator and promoter
B. Transcription - Writing information from DNA to t-RNA
C. Translation - Using information in m-RNA to make protein
D. Repressor protein - Binds to operator to stop enzyme synthesis.

Answer

To solve the question "Which one of the following is wrongly matched?", we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understanding Operon**:
- An operon is a cluster of genes under the control of a single promoter and is typically composed of structural genes, an operator, and a promoter.
- **Conclusion**: This option is correctly matched.

2. **Analyzing Transcription**:
- Transcription is the process of synthesizing RNA from a DNA template.
- The statement mentions "writing information from DNA to tRNA". However, during transcription, the information is actually transcribed into messenger RNA (mRNA), not transfer RNA (tRNA).
- **Conclusion**: This option is wrongly matched because it incorrectly states that transcription involves tRNA instead of mRNA.

3. **Understanding Translation**:
- Translation is the process where the information in mRNA is used to synthesize proteins.
- The statement regarding translation is correct as it accurately describes the role of mRNA in protein synthesis.
- **Conclusion**: This option is correctly matched.

4. **Analyzing Repressor Protein**:
- Repressor proteins bind to the operator region of an operon to inhibit the transcription of genes, effectively stopping enzyme synthesis.
- The statement regarding repressor proteins is correct.
- **Conclusion**: This option is correctly matched.

### Final Answer:
The wrongly matched option is the one that states transcription involves tRNA instead of mRNA.