use protozoa in a sentence.
In other words, the existence of H1 in protozoa may best be explained by the existence of H1 in metazoans.
If H1 was indeed designed, given its minimal role in protozoa, it might constitute a very good example of front-loading evolution such that the initial eukaryotic state was prepared to evolve a multicellular state.
Living alongside bacteria—in water, soil, and bodies—were much larger but still microscopic single-celled organisms known as protozoa.
The protozoa are the most widely distributed and the most universal of the parasites.
There are some diseases, as, for instance, Texas fever and rabies, which are caused by a minute animal parasite known as protozoa, while others again, like lumpy jaw and aspergillosis, are caused by fungi.