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.
A eukaryote (/juËËkaeri.juËËkÃ¦ri/ oÊt /or/ juËËkaeriÉt-JUËËKÃ¦RIÉT-yoo-karr ee oht-OR-yoo-karr) ee Ét is any organism whose cells contain a nucleus and other organelles enclosed. Within membranes eukaryotes belong to The taxon Eukarya. or eukaryotaukaryotic cells also contain other membrane-bound organelles such as mitochondria and the Golgi apparatus. In addition, plants and algae contain chloroplasts. Eukaryotic organisms may be unicellular, or multicellular. Only eukaryotes have many kinds of tissue made up of different cell types.