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.

[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.
[A]: Science


[Q]: Home to the last Barbary Macaque population in the whole of Europe, it joined the EU in 1973, but is a continuing source of diplomatic rows between two of its member states, also because of its role as an international tax haven. Its current status dates back to the 1713 treaty of Utrecht. During the Second World War, the German army devised the Operation Felix to capture this site that acted as an important and strategic British garrison and stronghold, but abandoned it subsequently. Its name is supposed to be derived from Arabic, meaning mountain of Tariq, and in Greco-roman mythology, it was known as one of the Pillars of Hercules. FTP, what is this site, famous for its rock, controlling the entry to the Mediterranean
[A]: History


[Q]: This author wrote an essay attacking the German railroad industry, noting that a Vanderbilt should step in and reform the system. That essay ends by saying "it is the greatest folly of which a man can be capable, to sit down with a slate and pencil to plan out a new social world. " Besides The Absurd Effort to Make the World Over, one of his essays attacks the "ecclesiastical prejudice in favor of the poor and against the rich," while another essay urges that attention be turned away from the poor "goodfornothing" and instead towards the "productive force. " That essay describes the namesake individual as a commonplace man who carries society's burdens. Besides What Social Classes Owe to Each Other and The Forgotten Man, his best known work features the subtitle a study of the sociological importance of usages, manners, customs, mores, and morals and describes the title behavioral norms. For 10 points, name this American sociologist, the author of Folkways.
[A]:
Social Science