Animal Cell
1 - All living organisms are composed of cells.
2 - Animal cells are too small to be visible to the naked eyes. Some of these cells are so tiny that even 1 million of them together hardly cover a space as large as the pointed end of a pin.
3 - Scientists estimate that our bodies contain anywhere from 75 to 100 trillion cells.
4 - Animal cells are nano ( billionth of a meter small ) chemical factories that are completely self-sufficient!
Structure of an animal cell :-
Here are some fascinating facts you should know about animal cells:
5 - Mitochondria: They are power house of a cell , which aids in conversion of energy. It provides the required amount of energy a cell needs. Also known as, "Powerhouse" .
6 - Cell Membrane: It is a very thin and nearly invisible structure which surrounds the cell. It controls the entry and exit of molecules. Also known as , "gate keeper".
7 - Cilia: Cilia are also known as, "Tiny Hairs". They are designed to move the cell or substances around the cell.
8 - Cytoskeleton: They help in maintaining the cell shape, movements and internal movements.
9 - Golgi Bodies: It aids in transportation of macromolecules around the cell.
10 - Lysosome: Lysosomes are also known an , "suicide sacs", which kills bacteria.
11 - Pinocytic Vesicle: It stores water for the cell.
12 - Vacuole: A vacuole is a membrane. It helps in intracellular digestion and releases waste products. It also contains water.
13 - Defense cells and the cell membrane. The membranes of the defense cells detect harmful external materials. When necessary , the tentacles of the cell membrane elongate to catch the bacteria and microbes. When the enemy is caught it is absorbed by the cell. The cell digests the enemy and the released particles are reused for the benefit of the body.