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]: In one story, a goddess was persuaded by a fox to sleep with this figure, and she subsequently fathered eight gods who could cure eight different body parts. This deity was sometimes known as the "Lord of semen," and in one story his semen caused seven different types of plants to sprout from the earth. This figure asked a sun god to make footprints in the ground so that he could fill them with water, giving life to a barren island called Dilmun. This figure saved humanity by warning Atrahasis of a coming flood and, in another story, the misfortunes of humans were a result of a contest between this figure and Ninhursag. This figure causes a confusion of tongues in a speech to Enmerkar, and he was sometimes represented as half-goat and half-fish. Commonly called the "Lord of Abzu," this figure ruled from the city of Eridu and in one story was seduced by the goddess Inanna. For 10 points, identify this Sumerian deity of knowledge, fertility, and water, who was later identified with the Babylonian Ea.
[A]: Social Science


[Q]: According to Gauss's Polynomial Theorem, a reducible polynomial with coefficients of this type can be factored into two polynomials with coefficients of this type. The Gaussian numbers of this type include a complex part, and a ring with no zero divisors is known as this type of domain. Leopold Kronecker hoped to ground analysis entirely in this set of numbers. This set can be extended from a smaller one by including the (*) additive inverses of successors to zero as defined by the Peano axioms. The floor and ceiling functions output a number of this type, and every rational number is a quotient of two of these numbers. For 10 points, name this set of numbers symbolized Z which includes 0, the natural numbers, and their negatives.
[A]:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Science


