The basis of all life on Earth is the cell. All creatures on Earth are made of cells. I am not going to dwell on the biology of cells and much it is not that relevant. But I do want to point out a few things.
First of all, there are 2 sorts of cells. As we think all the prokaryotic cell, which is fairly simple and it is the thing that all bacteria are made of. And then we have an eukaryotic cell, much more complicated beasts on the right, which did not appear until well into the history of the biosphere on earth. And there are many single-celled eukaryotes. But there are also and importantly multicellular organisms and all of those are based on the eukaryotic cell.
Significantly focusing on the fact which is mentioned is that prokaryotic and eukaryotic cells and it comprises that all creatures on earth are made of cells. There are two types of cells including prokaryotic and eukaryotic cells. Additionally, it also denotes that prokaryotic cells are very simple and are what bacteria are normally made of. Considering the most substantial insights, it can be stated that Eukaryotic cells are more complicated, which did not appear until the history of biosphere on earth. Most complex cells are made of eukaryotic cells.