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.
Medical Definition of EUKARYOTE. : any of a domain (Eukarya) or a higher taxonomic group (Eukaryota) above the kingdom that includes organisms composed of one or more cells containing visibly evident nuclei and organellesâcompare prokaryote.â euÂ·karyÂ·otÂ·ic also euÂ·caryÂ·otÂ·ic \-Ëkar-Ä-Ëaet-ËÃ¤t\ ik. adjectiveefinition of EUKARYOTE. : any of a domain (Eukarya) or a higher taxonomic group (Eukaryota) above the kingdom that includes organisms composed of one or more cells containing visibly evident nuclei and organelles â compare archaea, bacterium, prokaryote. â euÂ·karyÂ·otÂ·ic \-Ëker-Ä-Ëae-ËÃ¤, -tik-Ëka-\ rÄ. adjective