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I think what you're asking for is the nucleolus, the darker area of the nucleus that contains the DNA used to code ribosomal RNA.
The dark circle in the nucleus is the nucleolus/nucleole (it's called both.)

It's comprised of densely packed chromatin, and is where rRNA is transcribed before exiting the nucleus.

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10y ago

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Related Questions

Where do you find nucleolus?

The nucleolus is found within the nucleus of a cell. It is a dense spherical structure which produces the components for ribosomes.


What cellualar structure is respnsible for manufacturing ribosomes?

The nucleolus within the nucleus is where ribosomes are manufactured.


What is located within the nucleus and is involved in the making of ribosomes?

The nucleolus is located within the nucleus and is involved in the making of ribosomes. It is responsible for assembling ribosomal RNA (rRNA) and combining it with proteins to form the structure of ribosomes.


What structure is found in a nucleus?

Contained within a nucleus is DNA in the form of chromatin. In addition to this, the organelle known as a nucleolus is also found within the nucleus, and produces the building blocks of ribosomes.


The dark staining round structure within the nucleus is known as?

The dark staining round structure within the nucleus is known as the nucleolus. It is involved in the assembly of ribosomes, the cell's protein factories.


What does the nucleus make for the cell?

The nucleus produces ribosomes that are then used to make proteins within the cell. Additionally, the nucleus houses and protects the cell's genetic material in the form of DNA, which contains instructions for the cell's functions and characteristics.


What dose nucleolus do in a cell?

The nucleolus is a distinct structure within the cell nucleus responsible for producing ribosomes, which are essential for protein synthesis. It synthesizes ribosomal RNA (rRNA) and assembles ribosomal subunits that then combine with proteins to form functional ribosomes.


Which cell structure is located within the nucleus of a eukaryotic cell?

Nucleolus is in the nucleus. Chromosomes are also in the nucleus.


What are the darkly staining area of the nucleus that produces the subunits of ribosomes is?

The darkly staining area of the nucleus that produces the subunits of ribosomes is called the nucleolus. It is responsible for synthesizing ribosomal RNA (rRNA) and assembling ribosomal subunits. The nucleolus plays a crucial role in protein synthesis within the cell.


What is the small dot-like structure inside the nucleus?

The small dot-like structure inside the nucleus is the nucleolus. It is responsible for producing ribosomes, which are essential for protein synthesis. The nucleolus is not surrounded by a membrane and can often be seen as a distinct structure within the nucleus.


Is nucleolus a plant?

No, a nucleolus is found within the nucleus of a cell.


What produces ribosomal RNA?

Ribosomal RNA (rRNA) is produced in the nucleolus of the cell by RNA polymerase I. The nucleolus is a specialized structure within the nucleus that is responsible for synthesizing rRNA and assembling ribosomes.