The transfer of protein from electophoretic gel to nitrocellulose membrane is known as

Options

A. transferase
B. northern blotting
C. western boltting
D. southern blotting

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the process of transferring proteins from an electrophoretic gel to a nitrocellulose membrane.

2. **Identifying the Techniques**: There are several techniques used for transferring biological molecules from gels to membranes, including:
- Southern blotting (for DNA)
- Northern blotting (for RNA)
- Western blotting (for proteins)

3. **Focusing on the Correct Technique**: Since the question specifically mentions proteins, we need to identify which technique is used for protein transfer.
- Southern blotting is not applicable as it deals with DNA.
- Northern blotting is also not applicable as it deals with RNA.

4. **Confirming the Correct Answer**: The technique used for transferring proteins from an electrophoretic gel to a nitrocellulose membrane is known as **Western blotting**. This method involves the use of antibodies to detect specific proteins after they have been separated by gel electrophoresis.

5. **Conclusion**: The correct answer to the question is **Western blotting**.