Introduction to CELLS

Cells can be defined as the simplest unit of life. Cells can also be defined as the structural and functional units of organisms.The cell is the smallest unit of life. Often cells are microscopic and not visible to the human eye.

 Even though the cell is tiny, there are many parts to a living cell. Animal cells are different from plant cells. There are no cell walls or chloroplasts in animal cells.

Unlike the animal cells, plant cells have cell walls made of cellulose and chloroplasts containing chlorophyll for photosynthesis.