Name any cell organelle which is non-membranes.

Explanation

**Step-by-Step Solution:**

1. **Understanding Cell Organelles**: Begin by recognizing that cell organelles are specialized structures within a cell that perform distinct functions. Most organelles are either surrounded by a single membrane or double membranes.

2. **Identifying Non-Membranous Organelles**: The question specifically asks for a non-membranous organelle. This means we need to find an organelle that does not have any membrane surrounding it.

3. **Identifying Ribosomes**: One of the well-known non-membranous organelles is the ribosome. Ribosomes do not have a membrane; they are made up of ribosomal RNA and proteins.

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