What function does pert replace

What are the doorways into and out of cells, attached to the membrane, and built in the rough er.

Which description provides the best objective summary of the article in the passage?

Zoo geographic regions are characterized by the presence of specific groups of animals these regions are determined by the taxonomic or phylogenetic relationships of animals. the map shows the zoogeographic regions proposed by the naturalist alfred russel wallace in 1876. the similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between the organisms in both locations ?