In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

[EX Q]: This compound promotes the dephosphorylation and activation of enzyme HMG-CoA to favor cholesterol synthesis and a phenylalanine for leucine substitution at residue B25 results in its "Chicago" variety. Its biosynthesis involves an excision of the C-peptide, and the compound functions by binding to tyrosine kinase receptors on cell surfaces. Sanger's improvement upon the methods of Edman degradation involved its sequencing, and its production occurs primarily in beta cells on the islets of langerhans. For ten points, name this pancreatic counterpart of glucagon used to regulate blood sugar, deficiencies of which are found in sufferers of diabetes.  
[EX A]: Science

[EX Q]: Earthworms uniquely use the molecule lombricine to react with this molecule. This molecule activates P2X3 and P2X2/3, two receptors that control pain responses, and in conjunction with luciferin this molecule is responsible for the light of fireflies. In the muscular tissue of chordates, this compound donates a group to creatine. In proteins, this molecule, first synthesized by Alexander Todd, is almost always bound by a magnesium cofactor, and large quantities of this molecule are produced via oxidative phosphorylation in the electron transport chain. For 10 points, name this molecule discovered by Karl Lohmann,, the energy currency of the cell.
[EX A]: Science

[EX Q]: This composer wrote a single-movement work in E major for 10 winds and 5 strings that, despite being called a chamber work, requires a conductor, while another of his works begins with a pp descending quarter, dotted-eighth, sixteenth motif in the violas and cellos, which are soon joined by the violins. In another work by this composer of the Kammersymphonie, after the narrator finishes speaking, the men's chorus sings the (*) Shema Yisroel with the orchestra. This composer wrote a work in one movement with five clear sections for string sextet, which he later re-orchestrated for string orchestra. This composer of A Survivor from Warsaw based that other work on a Richard Dehmel poem. For 10 points, name this Second Viennese School composer of Transfigured Night.
[EX A]:
Fine Arts