Question

what is nucleus? describe it's various parts.​

Answer 1

Answer:

• The nucleus is the information centre of the cell and is surrounded by a nuclear membrane in all eukaryotic... A cell normally contains only one nucleus.

The nucleus consists of the following main parts:

• Nucleolemma or nuclear membrane (karyotheca)

• Nuclear sap or karyolymph or nucleoplasm

• Chromatin network or fibres

• Nucleolus

•  Endosomes.

Answer 2

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$\huge \blue { \tt{Nucleus}}$

The nucleus is a membrane-bound organelle that contains genetic material (DNA) of eukaryotic organisms. As such, it serves to maintain the integrity of the cell by facilitating transcription and replication processes. It's the largest organelle inside the cell taking up about a tenth of the entire cell volume.

$\huge \blue { \tt{Parts \: of \: Nucleus}}$

$\green { \tt{Nucleolus}}$

The nucleolus 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.

$\green { \tt{Nuclear \: pores}}$

The nuclear pore is a protein-lined channel in the nuclear envelope that regulates the transportation of molecules between the nucleus and the cytoplasm. In eukaryotic cells, the nucleus is separated from the cytoplasm and surrounded by a nuclear envelope.

$\green { \tt{Chromatin}}$

Chromatin is a substance within a chromosome consisting of DNA and protein. The DNA carries the cell's genetic instructions. The major proteins in chromatin are histones, which help package the DNA in a compact form that fits in the cell nucleus.