When a snake flicks its tongue, it is gathering odor particles for transfer to two fluid-filled sacs at the roof of the mouth -- Jacobson's organs -- that lead to a second, smaller olfactory chamber. The tongue is used only to assist in this process; snakes do not have a sense of taste.
A eukaryote is a type of cell (or unicellular organism) that possesses a nucleus and membrane-bound organelles, in contrast to prokaryotes (bacteria and archaea) which don't. Eukaryote means good/true nut/kernel in Greek, referring to the nucleus, while prokaryote means before nut/kernel.
Features of Eukaryotic Cells: A eukaryote is an organism that is made up of one or more eukaryotic cells. Some live a single cells and others are multicellular organisms. All multicellular organisms are made up of eukaryotic cells . Because of their complex organization, eukaryotic cells can carry out more specialized functions than prokaryotic cells can.