When combined with luciferin, this molecule is responsible for the light of fireflies, and as a signaling molecule, it can activate P2 membrane receptors. Proton gradients power the synthesis of this 
When combined with luciferin, this molecule is responsible for the light of fireflies, and as a signaling molecule, it can activate P2 membrane receptors. Proton gradients power the synthesis of this molecule, which is produced by an enzyme containing the F0 and F1 complexes. This molecule can be converted into a second messenger used in signal transduction, known as cyclic AMP. Along with pyruvate and NADH, two of these molecules are produced in glycolysis, and cellular respiration ideally produces 38 of these molecules. For 10 points, name this molecule that carries energy in cells.
When combined with luciferin, this molecule is responsible for the light of fireflies, and as a signaling molecule, it can activate P2 membrane receptors.
ATP [accept Adenosine Triphosphate]