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.
--------
Question: Irregularly shaped compartments of this organelle which change in response to cellular metabolic activity are called paraspeckles, and promyelocytic leukemia bodies are often found in this organelle. The biogenesis of snRNPs ["snurps"] is thought to be regulated by this organelle's (*) Cajal bodies, and it can be visualized through Hoechst and DAPI staining. Movement in and out of these organelles is regulated by RAN proteins at its namesake pores, and this organelle is not found in erythrocytes. This organelle is surrounded by a namesake "envelope" which is continuous with rough ER, and it is the site of transcription. For ten points, name this organelle only found in eukaryotes which contains the nucleolus as well as the genetic material of the cell.

Answer: Science

Question: The attenuated total reflection type of this can be used on compounds with a low surface area, while the diffuse reflectance type can be used to study samples that are not sufficiently transparent. The multiplex advantage explains the use of the Fourier Transform type of this. Diatomic bonds are generally not found in the fingerprint region, and the stretching seen using this technique generally occurs at higher frequencies than the bending. Most types of this use some sort of absorption, because each bond in the molecule will absorb only its characteristic frequency. For 10 points, name this type of analytical technique, which categorizes compounds based on the frequency of the vibration of its bonds when exposed to radiation of waves longer than those of visible light.

Answer: Science

Question: Nicholas of Cusa studied them while attempting to find the area of a circle by integration, Vincenzo Viviani found a method of constructing tangents with them, and Charles Bouvelles discussed them in 1501 as a mechanical means of squaring the circle. Pascal thought about them to take his mind off of a toothache, and later wrote a "History of" them. No matter where a particle is placed on an inverted one of these, it takes the same time to slide to the bottom, according to the Tautochrone problem. Also the solution to the Brachistochrone problem, this was named by Galileo, who suggested that arch bridges be built in the shape of this, and Huygens proposed that pendulum clocks swing in this kind of arc. FTP, name this curve traced out by a point on the circumference of a circle as the circle rolls along a straight line.

Answer:
Science