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.

This organelle's lamina helps support its shape. Some protists have both a macro and micro version of this organelle. One part of this organelle is the location of ribosome synthesis, while importins and exportins assist in transport in and out of this organelle. This organelle, whose envelope is continuous with the rough endoplasmic reticulum, has pores in its double membrane. Transcription occurs within this organelle, which disappears during mitosis as its chromatin assemble into chromosomes. For 10 points, name the control center of the cell.
Science

This quantity can be defined as minus the temperature times the derivative of entropy with respect to particle number. The Gibbs factor is a generalization of the Boltzmann factor that takes this quantity into account. Usually defined as the derivative of the Helmholtz free energy with respect to particle number, FTP name this quantity which governs particle flow, as particles flow from systems with higher values to systems with lower values.
Science

He painted a monastery with a tree on the right side in his circular painting The Charterhouse. He painted a girl in a white dress next to her brother in orange shorts and a black hat in Heneage Lloyd and His Sister, and a less characteristic portrait is that of John Kirby, who is in front of a dark brown background. He shows a man leaning with a long rifle and his wife sitting on a bench in a blue dress next to a plowed field in Robert Andrews and His Wife Frances, though he is better known for a depiction of a young Jonathan Buttall. FTP, name this English portraitist, a rival of Joshua Reynolds who painted The Blue Boy.

Fine Arts