TASK DEFINITION: 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.
PROBLEM: 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.

SOLUTION: Science

PROBLEM: The Hoecht stain binds to the minor groove of this molecule, forming G-quadruplexes. The ratio of nitrogen isotopes in this molecule, which exists in A, B, and Z forms, was measured in the Meselson-Stahl experiment to give evidence for its semiconservative replication. It winds around proteins called histones, and Okazaki fragments are formed when its namesake enzyme travels from the 5-prime to 3-prime direction of this molecule adding nucleotides. For 10 points, name this molecule that carries the genetic information of living organisms.

SOLUTION: Science

PROBLEM: In one essay, this philosopher discusses a figure who could "do with evil precisely what he does with Rahab or with the shades" and concludes that that figure, who "sees in unity what you see in fragments," suffers, thus resolving "The Problem of Job. " One chapter of one of his works traces its subject back to the second definition of knowledge given by Theaetetus and defines its subject as an "incomplete thought" that failed in its purpose according to a higher thought. Another chapter by this author explains the World of Interpretation using Pierce's "doctrine of Signs. " The former work is "The Possibility of Error" and requires the existence of "an infinite unity of conscious thought. " One of this author's works rejects conceptions of being such as mysticism, critical rationalism, and realism in its first volume, and then goes on to consider "Nature, Man, and the Moral Order"; that work is The World and the Individual. Ubiquitous to this author's work is the existence of an Absolute Knower. For 10 points, name this American idealist and author of The Problem of Christianity.

SOLUTION:
Social Science