Transcription is a process when

Options

A. messenger RNA is formed from DNA
B. ribosome RNA is formed DNA
C. protein is synthesised at the ribosomes
D. None of the above

Answer

**Step-by-Step Solution:**

1. **Define Transcription:**
Transcription is the biological process in which messenger RNA (mRNA) is synthesized from a DNA template. This process occurs in the nucleus of eukaryotic cells.

2. **Identify the Role of DNA:**
During transcription, the nucleotide sequence of DNA serves as a template for the synthesis of mRNA. This means that the information encoded in the DNA is copied into RNA.

3. **Nucleotide Triphosphates Requirement:**
The process of transcription requires nucleotide triphosphates (NTPs), which are the building blocks of RNA. These NTPs are used to form the RNA strand complementary to the DNA template.

4. **Evaluate the Options:**
- **Option A:** "mRNA is synthesized in the nucleus using the nucleotide sequence of DNA as a template." This is correct as it aligns with the definition of transcription.
- **Option B:** "ribosomal RNA is formed from DNA." This describes a different process related to ribosomal RNA synthesis, not transcription.
- **Option C:** "protein is synthesized." This refers to translation, which occurs at the ribosome, not transcription.
- **Option D:** "none of the above." This is incorrect since option A is correct.

5. **Conclusion:**
The correct answer is **Option A**, as it accurately describes the transcription process.

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