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: 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.

SOLUTION: Science

PROBLEM: This organ produces a tetrapeptide, which bonds to macrophage receptors, and is known as tuftsin. The sinusoids of one portion of this organ contain blood and a reserve of monocytes which can be utilized in the case of hemorrhagic shock. The other major portion of this organ contains Malphigian corpsules and synthesizes antibodies. Located in the abdominal region and consisting of red and white pulp, for 10 points, name this organ part of the lymphatic system that helps to filter and clean the blood.

SOLUTION: Social Science

PROBLEM: A thermal form of process can be seen in a mixed gas through the Soret effect, while another form involving momentum can be observed in the laminar flow of a liquid across a solid surface. When semiconductors are produced, certain layers are sometimes doped via this process, although ion implantation is typically preferred.The most commonly observed form of the phenomenon can be described by a law which shows that flux is proportional to the concentration gradient and in the direction of lower concentration, Fick's law. FTP, name this form of passive transport that involves spontaneous movement of particles from a higher concentration to a lower concentration.

SOLUTION:
Science