Cells are different depending on the job they do and the organism the cells from. Every cell contains structures inside the cell. These are called sub cellular structures.
Eukaryotic cells contain genetic information in a nucleus. They are complex and relatively large. Plant and animal cells are example of Eukaryotic cells.
Prokaryotic cells do not contain a nucleus sp genetic material floats in the cytoplasm. They are simple cells and typically smaller than eukaryotic cells. Bacterial cells are examples of prokaryotic cells.