During transcription, when DNA unzips, this enzyme binds to one strand of DNA

Options

A. RNase
B. DNA polymerase
C. DNase
D. RNA polymerase

Answer

**Step-by-Step Solution:**

1. **Understanding Transcription**: Transcription is the process where the genetic information encoded in DNA is copied into RNA. This occurs in the nucleus of eukaryotic cells.

2. **DNA Structure During Transcription**: During transcription, the DNA molecule consists of two strands: the template strand and the coding strand. The template strand is the one that is used to synthesize RNA.

3. **Role of RNA Polymerase**: The enzyme responsible for synthesizing RNA from the DNA template strand is called RNA polymerase. This enzyme binds to the template strand of DNA during the transcription process.

4. **Process of DNA Unzipping**: When transcription begins, the DNA double helix unwinds or "unzips," allowing RNA polymerase to access the template strand.

5. **Binding of RNA Polymerase**: RNA polymerase binds specifically to the template strand of DNA, where it initiates the synthesis of RNA by adding complementary RNA nucleotides.

6. **Conclusion**: Therefore, the enzyme that binds to one strand of DNA during transcription is RNA polymerase.

**Final Answer**: The enzyme that binds to one strand of DNA during transcription is RNA polymerase.

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