Where are we going with this? The information on this page should increase understanding related to this standard: Evaluate comparative models of various cell type…Evaluate eukaryotic and prokaryotic cells.
(Do they play music??)
Okay… starting with cell theory, we are expected to agree that…
Not all cells have a nucleus. For instance, red blood cells do not. The function of red blood cells is to carry oxygen throughout the organism. Without a nucleus, they can carry ore oxygen.
So, does this make red blood cells prokaryotic? Not actually. They start out as eukaryotic cells, but as they develop, the get rid of their nucleus.
Consider this: Some breeds of dogs have their tails cropped-off routinely. Removing a part of the tail does not cause them to stop being dogs. In the same way, "cropping off" the nucleus does not cause a red blood cell to stop being eukaryotic.