Which of the following is an exergonic reaction? (3 points) A. The conversion of one glucose molecule to two pyruvate molecules by glycolysis
B. The formation of ATP from ADP and Pi
C. The movement of a proton from the mitochondrial matrix to the intermembrane space
D. The transfer of electrons from O2 to NADH

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.