What are proteasomes?

Options

A. 1)Complexes of snRNA and proteins that excise introns
B. 2)Small, positively charged proteins that form the core of nucleosomes
C. 3)Enormous protein complexes that degrade unneeded proteins in the cell
D. 4)Complexes of transcription factors whose protein-protein interactions are required for enhancing gene transcription

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the definition of proteasomes. It provides four options, and we need to identify which one correctly describes what proteasomes are.

2. **Analyzing the Options**:
- **Option 1**: "Complexes of SN RNA and proteins that X i entrants." This does not describe proteasomes.
- **Option 2**: "Small positively charged proteins that form the core of nucleosome." This option is misleading because it describes histones, not proteasomes.
- **Option 3**: "Enormous protein complexes that degrade unneeded proteins in the cell." This option correctly describes proteasomes.
- **Option 4**: "Complexes of transcription factors whose protein-protein interactions are required for enhancing gene transcription." This does not describe proteasomes.

3. **Identifying the Correct Option**: After analyzing the options, it is clear that the correct description of proteasomes is found in Option 3, which states that they are "enormous protein complexes that degrade unneeded proteins in the cell."

4. **Conclusion**: Therefore, the correct answer to the question "What are proteasomes?" is that they are enormous protein complexes that degrade unneeded proteins in the cell.

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