instruction:
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:
Lin and Shu proposed the density-wave theory to explain how the structure of these entities is sustained. The most accurate method for measuring the distances to distant ones uses a relation between their maximum rotational velocity and absolute magnitude, which is known as the Tully-Fisher method. They are generally blue because of their high content of old stars, and one type of them features arms that emanate from each end of a namesake structure. They have discs like the lenticular type, but contain much more angular momentum than the elliptical type. FTP name these galaxies, some of which are barred, including the Milky Way.
answer:
Science

question:
This compound promotes the dephosphorylation and activation of enzyme HMG-CoA to favor cholesterol synthesis and a phenylalanine for leucine substitution at residue B25 results in its "Chicago" variety. Its biosynthesis involves an excision of the C-peptide, and the compound functions by binding to tyrosine kinase receptors on cell surfaces. Sanger's improvement upon the methods of Edman degradation involved its sequencing, and its production occurs primarily in beta cells on the islets of langerhans. For ten points, name this pancreatic counterpart of glucagon used to regulate blood sugar, deficiencies of which are found in sufferers of diabetes.
answer:
Science

question:
This man was the subject of a 1949 Henry Cowell opera designed as a satire against Dwight Eisenhower. He died in exile after a conservative coup led by his successor, Ramn Freire. When his father became viceroy of Peru, he was sent to London, where he met Francisco de Miranda and joined the independentist Lautaro Lodge. He began his public life as a deputy to the Cabildo from La Laja. His cavalry charge at the battle of Chacabuco allowed him to enter Santiago in triumph along with Jose de San Martin in March 1818. FTP, name this descendant of Irish officers in Spanish service, the first ruler of an independent Chile.
answer:
History