Here's what you need to know about the nucleolus:
* Function: The nucleolus is responsible for ribosome biogenesis, meaning it produces the building blocks of ribosomes. Ribosomes are essential for protein synthesis, so the nucleolus plays a vital role in cellular function.
* Structure: The nucleolus is not membrane-bound, meaning it doesn't have a separate membrane surrounding it. Instead, it's a dense region within the nucleus that contains ribosomal RNA (rRNA) and proteins.
* Appearance: Under a microscope, the nucleolus appears as a dark, spherical body within the lighter nucleus.
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