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: 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: Earthworms uniquely use the molecule lombricine to react with this molecule. This molecule activates P2X3 and P2X2/3, two receptors that control pain responses, and in conjunction with luciferin this molecule is responsible for the light of fireflies. In the muscular tissue of chordates, this compound donates a group to creatine. In proteins, this molecule, first synthesized by Alexander Todd, is almost always bound by a magnesium cofactor, and large quantities of this molecule are produced via oxidative phosphorylation in the electron transport chain. For 10 points, name this molecule discovered by Karl Lohmann,, the energy currency of the cell.

SOLUTION: Science

PROBLEM: These objects contain the zone of plastic flow and the zone of brittle flow. They are formed by compressing firn, and parts of them break off by calving. Till is soil left behind by these objects, which also push material to form moraines. Cirques (SERKS) and fjords (FYORDS) are among the landforms due to erosion by these objects. For 10 points, name these moving masses of land ice.

SOLUTION:
Science