Question

What is the role of nucleus in a cell?

• A. It regulates the entry and exit of materials in a cell
• B. It contains the hereditary material
• C. It helps in recycling cellular components
• D. It synthesises digestive enzymes

Answer 1

The correct option is B It contains the hereditary material

Eukaryotic cells have a well-defined nucleus. It is covered by a nuclear membrane and contains DNA - the hereditary (genetic) material of the cell.
DNA in association with a variety of proteins forms thread-like structures called chromatin fibres. These fibres condense during cell division to form chromosomes.