All living things are made up of at least one Cell. Cells are the building blocks of that carry out the functions that keep alive. Cells can only be seen with a . The most common microscope found in classrooms today is the microscope. was the first person to actually discover cells in . He built a simple microscope and looked at dead, thin slices of . He thought these compartment-like boxes looked like small jail . This led him to call these boxes . This discovery led to many new discoveries. One of which stated, all develop from cells. This was concluded by scientist, Rudolf .

All living things are made up of atleast one cell. Cells are the building blocks of life that carry out the functions that keep organisms alive. Cells can only be seen with a microscope. The most common microscope found in classrooms today is the simple microscope. Robert Hooke was the first person to actually discover cells in 1665. He built a simple microscope and looked at dead, thin slices of cork. He thought these compartment-like boxes looked like small jail cells. This discovery led to many new discoveries. One of which stated, all cells develop from preexisting cells. This was concluded by scientist, Rudolf Virchow.

there are mainly three domains in biological classification namely; archaea, bacteria, and eukarya.

archaea includes all the prokaryotic cells which are characterized by their lipid membranes. they have branched hydrocarbon which is attached to glycerol through an ether linkage.

bacteria includes all the prokaryotic cells, the cell membrane of which are made up of the unbranched fatty acid chain. in addition, they are attached to glycerol through an ester bond.

eukarya includes all the eukaryotic cells, that is, the cells contain a nucleus and other membrane-bound cell organelles.

they can be autotrophic as well as heterotrophic, unicellular as well as multicellular

they include kingdoms like protista, plantae, animalia, fungi et cetera.

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