1 The Fundamental Biology

The fundamental unit of life is cell. Cell was first discovered by Robert Hooke in 1665 in a simple microscope.Cells are of two types: eukaryotic, which contain a nucleus, and prokaryotic, which do not. Prokaryotes are single-celled organisms, while eukaryotes can be either single-celled or multicellular.There are over 200 different cell types in the human body. Each type of cells is specialised to carry out a particular function, either solely, but usually by forming a particular tissue. Different tissues then combine and form specific organs, where the organ is like a factory where every type of cell has its own job. These are some type of cell that are very important to know :Cell Types

Stem cells. Stem cells are cells that are yet to choose what they are going to become. ...

Bone cells. There are at least three primary types of bone cell:

Blood cells. There are three major types of blood cell:

Muscle cells. ...

Sperm cells. ...

Female egg cell. ...

Fat cells. ...

Nerve cells.