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Question

The chief role of the nucleolus in a nucleus is

A
Ribosome synthesis
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B
Chromatid separation
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C
Organization of chromosomes
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D
DNA replication
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Solution

The correct option is A Ribosome synthesis
The nucleolus is a round body located inside the nucleus of a eukaryotic cell. It is not surrounded by a membrane but sits in the nucleus. The nucleolus makes ribosomal subunits from proteins and ribosomal RNA, also known as rRNA. It then sends the subunits out to the rest of the cell where they combine into complete ribosomes. Ribosomes make proteins; therefore, the nucleolus plays a vital role in making proteins in the cell.

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