AP BIOLOGY

Detailed explanation-1: -The nucleus is the largest and most significant living organelle of the cell. All cell activities of the cell are regulated by the nucleus. Hence it is called brain or control centre of the cell.

Detailed explanation-2: -’Nucleus is the control center of the cell ‘.

Detailed explanation-3: -Nucleus is known as the control center of the cell as it performs the following functions: The nucleus contains the hereditary material of the cell, the DNA. It sends signals to the cells to grow, mature, divide and die. The nucleus is surrounded by the nuclear envelope that separates the DNA from the rest of the cell.

Detailed explanation-4: -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.