The synthesis of membrane proteins is completed in both the smooth endo retic for the lipid tails and the rough endo retic for the rest of the phospholipid structure. Proteins are transported to the golgi apparatus in vesicles (membranous sacs) and bud off of the golgi apparatus in vesicles as well. The vesicle then fuses with the membrane and releases its contents.
A population is all the organisms of the same species in a group, like humans. Population is different from a community in that a population is every organism of the species grouped as a whole, and a community is a certain number of organisms within the whole population. That may not make sense, but that’s as good as I can describe it.
Since it has no nucleus it's most likely a<u><em> prokaryote</em></u>