What are the membrane bound sacs that package and transport proteins?

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.

Which is the most likely reason the writer of the play pygmalion chose to change the character of galatea from a statue to working-class woman?

Pulmonary arteries carry highly oxygenated blood. true or false?