explain the structure of nucleus


Structural components

Feature s

Nuclear membrane

  • The nucleus is enclosed by a double layered cellular membrane called the nuclear membrane.


  • The nucleus contains a nuclear sap, enclosed by the nuclear envelope, which is known as the nucleoplasm. This holds the nucleoli and suspends the chromatins.


  • The nucleolus is a sub-organelle present inside the nucleus. It can be observed as a dark spot under the microscope.

  • Nucleoli are made up of proteins, ribosomal RNA (rRNA), and ribosomal DNA (rDNA).

Chromatin network

  • DNA gets associated with protein molecules to form chromatins.

  • Chromatins are present in the nucleoplasm.

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