NEET BIOLOGY

Detailed explanation-1: -The nucleus is a specialized double-bound structure or organelle. It acts as the control center of the cells. It is the characteristic part of eukaryotic cells which is absent in prokaryotes like bacteria and viruses. It contains all the genetic material of organisms.

Detailed explanation-2: -The presence of a nucleus is the principal feature that distinguishes eukaryotic from prokaryotic cells. By housing the cell’s genome, the nucleus serves both as the repository of genetic information and as the cell’s control center.

Detailed explanation-3: -The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus. The gel-like matrix in which the nuclear components are suspended is the nucleoplasm.

Detailed explanation-4: -The main function of nucleus in eukaryotic cells is to protect the DNA. The nucleus separates the DNA from the rest of the cell and keeps it safe. The nucleus also regulates what enters and leaves.

Detailed explanation-5: -Because nucleus contains a material called gene which controls all activities of cell and its characteristics. Cell nuclei contain most of the cell’s genetic material, organized as multiple long linear DNA molecules in complex with histones, to form chromosomes.