we study about cell in biology.What is a cell,cell is the smallest unit and structural and functional unit of life.
cell was first discovered by Robert Hook in 1665 cell forms tissues tissues forms organ organ forms organ system of body
Multicellular:- means many cells humans animals
Procaryotic cell:-very primitive having nucleus
eucaryotic cell not having nucleus
study of cell is called cytology
types of cells:- there are hundreds of cells
1 Blood cells :-again three types
a red blood cells:- carrying oxygen
b white blood cells:- fight against diseases protect immune system
c platelets:- helps in clotting of blood
Bone cells:- three types of bone cells
a osteoclast
b osteoblast c osteocytes
3 Muscular cells:-Its performs many functions like movement support
4Fat cells:- they stored fats and gives energy
5 Nerve cells also called neurons they carry messages of the brain
there are many only few are discuss here
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