NEET BIOLOGY

Detailed explanation-1: -When cells divide, they make new cells. A single cell divides to make two cells and these two cells then divide to make four cells, and so on. We call this process “cell division” and “cell reproduction, ” because new cells are formed when old cells divide.

Detailed explanation-2: -New cells are created from existing cells through a process referred to as the cell cycle. One cell can make a copy of itself and form two new daughter cells. There are two major tasks that have to happen every cell cycle. First, cells have to make an exact copy of their DNA.

Detailed explanation-3: -No, all the cells do not divide all the time throughout their lives in animals. Hormonal influence regulates growth to a certain extent. Besides, most of the matured and differentiated cells like heart cells, neurons lose their ability of division. However, epidermal cells continue to divide.

Detailed explanation-4: -Thanks to experimentation and the invention of the microscope, it is now known that life comes from preexisting life and that cells come from preexisting cells.