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.
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Question: Imetelstat, a potential new cancer therapy agent, works by targeting the enzyme that repairs these   structures. Blackburn, Greider, and Szostak received the 2009 Nobel Prize for determining the role of  these structures, which typically adopt a G-quadruplex shape. The shortening of these structures   explains the Hayflick limit to cell division and is the basis for the cellular theory of aging, and that  shortening of these structures can lead to cell senescence or apoptosis. Consisting of thousands of  TTAGGG repeats in humans, name these end sequences of chromosomes that prevent genes from  being lost during DNA replication.

Answer: Science


Question: His friends realize they are "tied to" this character after one of them takes a bite out of a turnip when he wants a carrot. The arrival of a character whose name means nothing to them allows a character to recall a family called Gozzo, whose mother had the clap, but after that character leaves with his servant, one of this white-bearded character's workers, the Boy, arrives to tell the two protagonists that he will not arrive this evening, but surely tomorrow. After the reappearance of Lucky and Pozzo in Act Two, the protagonists agree to hang themselves the next day if this character does not arrive. FTP, identify this man of a Samuel Beckett play for whom Vladimir and Estragon are waiting.

Answer: Literature


Question: This technique can be followed up by ethidium bromide staining which allows easy visualization of the resulting bands. The namesake component in this procedure must be covered with tris acetate buffer and ladders must be placed in the end wells to allow comparison. Polyacrylamide may used to produce the matrix when the samples are small, though agarose is more commonly used. For 10 points, identify this technique wherein an electric field separates DNA molecules according to size as they travel to the positive electrode.

Answer:
Science