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:
These compounds are described using the E-Z [E dash Z] notation when they occur across alkenes, and a more generalized version of that notation is the cis-trans notation. Both of those are examples of diastereomers [di-uh-stereo-mers], and examples of these include cyclohexane and hexene. Differing bonding patterns make up structural ones of these compounds. When these compounds are mirror images of each other, they are referred to as enantiomers [en-anti-omers]. For 10 points, name these compounds that have varying chemical structures despite having the same chemical formula.
answer:
Science

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:
One building constructed by this empire features an inscription telling of Japanese traveler Ukondafu Kazufusa's celebration of this empire's traditional New Year. According to legend, this empire's foundations were laid when Queen Liu-ye married the man who used a magic bow to repel her attacks, Kaudinya, and one ruler of this empire staved off attack by giving offerings to Mongol commander Sabatu. This empire's first month was known as Karttika, which historians determined by reading the observations of Chinese diplomat to this empire Zhou Daguan. Founded when this empire broke away from the Sailendra Dynasty, this successor of the Chenla Empire saw its founder declare himself the chakravartin or "ruler of the universe. " Successfully subjugating the region of Vijaya, this empire saw the construction of the Bandeay Srai and Bayon temples. Eventually conquered by the kingdom of Ayutthaya, this empire obtained much of its water from the lake-river system, Tonle Sap. Founded in 802 AD, for 10 points, name this empire most famous for Suryavarman II's construction of the Angkor Wat complex.
answer:
History