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.
Prokaryotic. Definition. adjective. Of, or pertaining to, or characteristic of a prokaryote, which is basically an organism lacking a true nucleus. Supplement. Organisms may be grouped in two major groups: prokaryotes and eukaryotes.Prokaryotes include the eubacteria and archaea. Word origin: prokaryote + - ic.rokaryotic. Definition. adjective. Of, or pertaining to, or characteristic of a prokaryote, which is basically an organism lacking a true nucleus. Supplement. Organisms may be grouped in two major groups: prokaryotes and eukaryotes. Prokaryotes include the eubacteria and archaea.