instruction:
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.
question:
Halogen addition to them creates a mixture of a 1-2 and 1-4 addition product. One preparation of them involves butane undergoing thermal dehydration. Another synthesis of the conjugated variety of this chemical group involves elimination of unsaturated alcohols and alkyl halides. They include a number of useful reagents, including ones named for Chan, Dane, Brassard, Rawal, and Danishefsky. In addition to the conjugated variety, they also occur in isolated and cumulated varieties. Conjugation energy guarantees that the conjugated form is the most stable. For ten points, what is this organic functional group whose 1,3 variety are a principal reactant in the Diels-Alder reaction, and which is characterized by a pair of double bonds.
answer:
Science

question:
One protein that binds to this protein also binds to proline-rich sequences in the membrane proteins Vasp and Mena, and another is knocked out in the singed mutant. Phosphatidyl-inositol-4,5-bisphosphate regulates the binding of vinculin to both talin and this other protein, whose function is performed by nematode Major Sperm Protein in the only (*) eukaryotic cells known to lack one form of it. In addition to the aforementioned profilin and facsin, severin and gelsolin bind to this protein and sever it. Two toxins often used to study it are cytochalasins and phalloidin. Thymosin 4 sequesters this protein, which undergoes treadmilling because the critical concentration at its (+) and (-) ends is not the same. This protein consists of G monomers which polymerize into F filaments, which make up the microfilaments of the cytoskeleton. For 10 points, name this protein that forms cross-bridges with myosin in muscle cells.
answer:
Science

question:
of this man's early poems uses the phrase "Master of the still stars and of the flaming door" to describe "The Valley of the Black Pig," while another notes "The fascination of what's difficult/ Has dried the sap out of my veins. " One of his war poems notes "We, who seven years ago/ Talked of honour and of truth,/ Shriek with pleasure if we show,/ The weasel's twist, the weasel's tooth," and another implores "Come build in the empty house of the stare"; those are (*) "Nineteen Hundred and Nineteen" and "Meditations in Time of Civil War. " In addition to referring to his "Decrepit age that has been tied to me/ As to a dog's tail," leaving him "A tattered coat upon a stick," his later work sees him dream "of a Ledaean body, bent/ Above a sinking fire" while describing his school inspections, and also describing "A sudden blow: the great wings beating still" in another poem that plays on the same myth. For 10 points, name this poet of "Among School Children," "The Stolen Child" and "Easter, 1916. "
answer:
Literature