A bacteria cell is very simple, but still has a well developed structure.  Bacteria is prokaryotic which means that they do not have a nucleus.  They do have a nucleoid though which is a central region that holds the DNA, but is not bound by a membrane.  Bacteria cells perform all the same functions as every other kind of cell, including mitosis, meiosis, and DNA replication.  In fact every type of living organism replicates DNA the same way which leads scientists to believe that every living thing is related.  

Plant cells are a type of eukaryote which means that they do have a membrane- bound nucleus.  They are like animal cells, but have a cell wall and mitochondrion which animals do not have.  Also, animal cells have a very small vacuole, but plant cells have vacuoles that take up about 90% of the cell.  One other difference between plant and animal cells is that plant cells have more of a rectangular shape whereas animal cells have a round shape.  These are the main differences between animal,  plant, and also bacteria cells, which have very obvious differences.




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