Onion and Cheek Cells

Onion and Cheek Cells :-
The cell is the basic structural, functional, and biological unit of all known living organisms. A cell is the smallest unit of life that can replicate independently, and cells are often called the "building blocks of life". Cells vary greatly in size, shape, and function. There are plant and animal cells. For example : Onion cell is plant cell whereas human cheek cell is a typical animal cell. The cells of onion skin tend to be very rectangular and may even appear to look like a brick wall in their uniformity. The major reason for their shape is the cell wall. The cell wall is a rigid layer of cellulose that helps maintain the shape of a plant cell. Animal cells lack a cell wall, so they are less regular in shape. The human cheek cell will serve as the model of a typical animal cell.

This video explains how to prepare and observe stained temporary mounts of onion peel and human cheek cells.