The coat of vesicles that transport materials around the cell interior a) is composed of two distinct protein layers. b) possesses an outer cage or scaffolding that forms the framework for the coat. c) possesses adaptors that are able to select specific cargo molecules possesses an inner layer of adaptors that serves primarily to bind the vesicle's cargo d)all of these are correct.

Based on the observation that only male crickets produce a song, you hypothesize that a male's song is a form of communication to potential mates. you set up a simple experiment to test this hypothesis. in the laboratory, you place a male snowy tree cricket in enclosure a, which is adjacent to enclosureb. in enclosure b, you place other insects, one at a time, and observe their responses to the male's song. the enclosures are designed so that the two insects being tested cannot see or smell each other, but sound is transmitted from enclosure a to enclosureb.