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]: Coombs tests detect these bodies bound to erythrocytes, and a technique that uses these entities is ELISA. These molecules have a namesake fold, in which two beta sheets are held together by amino acid charges. These adaptable molecules can somatically recombine in a process called V(D)J recombination and are also capable of changing isotype by altering conformation of their heavy chains. Like enzymes, they operate via a a so-called "lock-and-key" mechanism, as verified by Linus Pauling. FTP, name these characteristically y-shaped immune molecules exploited in vaccination and produced by B cells in response to specific antigens.
[A]: Science


[Q]: 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.
[A]: Science


[Q]: An offshoot of this faith known as the Azali was considered the true belief system by E. G. Browne, a 19th and 20th century authority on many of its writings. Two martyrs for this religion were eulogized as the "Twin Shining Lights" in a text written to the son of Aga Najafi, also called the "wolf" by this religion's founder. The dogmas of this religion can be summarized as unity of God, unity of humanity, and unity of religion, and several other key tenets are found in its holy book, the Kitab-i-Aqdas. Shoghi Effendi served as "Guardian" of this faith during the 20th century, and it was founded by a man whose name translates to Glory of God and who took on the mantle and adopted many of the teachings of the Bab. For 10 points, name this Persian religion founded by Baha'ullah.
[A]:
Social Science