Question

What is nucleus????????​

Answer 1

Answer:

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The nucleus is an organelle found in most eukaryotic cells, the exception being red blood cells. In animal cells it is both the largest and stiffest organelle and is easily identifiable by light microscopy. The average mammalian nucleus has a diameter of ~6µm and occupies about 10% of the total cell volume.

A schematic of the nucleus inside a cell.

1. The nucleus;

2. Nuclear Lamina;

3. Nucleoplasm;

4. Euchromatin;

5. Heterochromatin;

6. The nucleolus;

7. The nuclear envelope;

8. Ribosomes;

9. Nuclear pore;

10. Rough Endoplasmic Reticulum;

The primary functions of the nucleus are to store the cell’s DNA, maintain its integrity, and facilitate its transcription and replication. The nuclear contents, which include the genetic material and the many proteins required for its processing, are enclosed within a double membrane known as the nuclear envelope, but remain functionally connected to the cytoplasm via nuclear pores. It is through these pores that RNA can be transported to the cytoplasm for further processing.

Answer 2

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.