Question

write four parts of nucleus present in cell​

Answer 1

Answer:

Hey buddy!!

The parts of the nucleus of a cell are:

Nuclear Envelope

The nuclear envelope, also known as the nuclear membrane, is made up of two lipid bilayer membranes which in eukaryotic cells surrounds the nucleus, which encases the genetic material. The nuclear envelope consists of two lipid bilayer membranes, an inner nuclear membrane, and an outer nuclear membrane.

Nuclear Pores

A nuclear pore is a part of a large complex of proteins, known as a nuclear pore complex that spans the nuclear envelope, which is the double membrane surrounding the eukaryotic cell nucleus. There are approximately 1,000 nuclear pore complexes (NPCs) in the nuclear envelope of a vertebrate cell, but it varies depending on cell type and the stage in the life cycle.

Nucleoplasm

Similar to the cytoplasm of a cell, the nucleus contains nucleoplasm, also known as karyoplasm, or karyolymph or nucleus sap. The nucleoplasm is a type of protoplasm, and is enveloped by the nuclear envelope (also known as the nuclear membrane). The nucleoplasm includes the chromosomes and nucleolus.

Chromatin

Chromatin is a complex of DNA and protein found in eukaryotic cells. Its primary function is packaging long DNA molecules into more compact, denser structures. This prevents the strands from becoming tangled and also plays important roles in reinforcing the DNA during cell division, preventing DNA damage, and regulating gene expression and DNA replication.

Nucleolus

The nucleolus (/nuː-, njuːˈkliːələs, -kliˈoʊləs/, plural: nucleoli) is the largest structure in the nucleus of eukaryotic cells. It is best known as the site of ribosome biogenesis. Nucleoli also participate in the formation of signal recognition particles and play a role in the cell's response to stress. Nucleoli are made of proteins, DNA and RNA and form around specific chromosomal regions called nucleolar organizing regions.

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Answer 2

4 parts of the nucleus are:

• Nucleuar Memberane: Just as a cell has a cell membrane to protect the inner components of tge cell, similarly nucleus also has a boundary called nuclear membrane which seperates it from the cytoplasm. Moreover, the nuclear membrane is porous which helps in the exchange of materials between nucleus and the cytoplasm.
• Nuclear pores: They help in the exchange of materials, particularly ribosomes made by the nucleus, from the cell.
• Nucleolus: Nucleolus is a dense material present in the nucleus. It consists of chromosomes, and these chromosomes contains genes, units of inheritance. Further the genes have a chemical known as DNA.
• Nucleoplasm: It is just like the cytoplasm, a jelly like fluid present in the nucleus. Nucleoplasm contains tangled mass called chromatin fibres.