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:
proteins bind one end of these structures and help inhibit a process called "catastrophe. " These structures can have persistence lengths of 3-4 mm, which is several orders of magnitude higher than the average cellular diameter. These structures can be severed by katanin. Drugs such as paclitaxel stabilize these structures and prevent their depolymerization, where colchicine prevents its dimeric subunits from coming together. Shortening of these structure at the kinetochore ends of the spindle apparatus helps chromosomes walk towards poles during mitosis and meiosis. For 10 points, identify these structures which are components of the cytoskeleton and which are made of tubulin proteins.
answer:
Science

question:
A definitive study on this engagement was authored by Hugh Cole, who devotes a section to discussing the Losheim Gap. It also stresses the importance of the oft-overlooked Operation Bodenplatte carried out on a holiday and alternately known as Operation Hermann. The clash saw the murder of the Wereth 11, a group of waylaid black soldiers, and courageous stands at St. Vith and Bastogne, which turned the fight and made up for failure to garner intelligence through ULTRA. Anthony McAuliffe became famous for his reply of "Nuts" and Patton for his diary statement that it was "lovely weather for killing Germans. " FTP, name this final German offensive of World War II also known as the Battle of the Ardennes.
answer:
History

question:
Two years after its conclusion, forces of Father Kostadin Buvski and Leonid Vulgaris met at Gremen to decry it as ineffective. Romania was forced to exchange South Bessarabia to Russia for Dobruja, and the newly created Greater Bulgaria was further divided into North Bulgaria, Eastern Rumelia, and Macedonia. Its eventual mediator offered himself as an "honest broker" between nations represented by Alexander Karatheodori and Alexander Gorchakov, although all of the signers of the 1856 Treaty of Paris were present. FTP, name this meeting convened to rethink the Treaty of San Stefano, an 1878 conference chaired by Otto von Bismarck in the German capital.
answer:
History