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Do Plant Cells Have a Nucleolus?
Do Plant Cells Have a Nucleolus?. DNA in both plant and animal cells is housed within a structure called a nucleus. When specimens are stained, a dense mass in the nucleus is often visible under the microscope. This mass is called the nucleolus.
DNA in both plant and animal cells is housed within a structure called a nucleus. When specimens are stained, a dense mass in the nucleus is often visible under the microscope. This mass is called the nucleolus.
Features
Just like animal cells, plant cells also have a nucleolus. The nucleolus, however, is only present when the cell is not dividing. Before cell division, the chromosomes are duplicated and become more compacted so that they take on the familiar X-shape often used to depict them in news articles.
Function
The nucleolus is a dense structure formed by a complex of DNA, RNA and proteins. The DNA in this region codes primarily for ribosomal RNA molecules or rRNAs; these molecules are essential components of cellular structures called ribosomes, which play a vital role by translating coded instructions from genes into protein.
Theories/Speculation
Although many of the components that form the nucleolus have been identified, it's not yet entirely clear how the nucleolus is organized. According to "Biology," some recent research suggests that it may play a role in regulating processes like cell division.
