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.

The magnetic moment of a charged particle is equal to this quantity times the g-factor times charge divided by two times the mass. Delta baryons have a value of 1.5 for this quantity, and, like other particles with half-integer values of this quantity, obey Fermi-Dirac statistics, whereas those with integer values obey (*) Bose-Einstein statistics. The Pauli Exclusion Principle states that pairs of electrons in the same orbital sub-shell must have opposite values of this quantity. For ten points, identify this quantum number, the angular momentum of a sub-atomic particle.
Science

One protein that binds to this protein also binds to proline-rich sequences in the membrane proteins Vasp and Mena, and another is knocked out in the singed mutant. Phosphatidyl-inositol-4,5-bisphosphate regulates the binding of vinculin to both talin and this other protein, whose function is performed by nematode Major Sperm Protein in the only (*) eukaryotic cells known to lack one form of it. In addition to the aforementioned profilin and facsin, severin and gelsolin bind to this protein and sever it. Two toxins often used to study it are cytochalasins and phalloidin. Thymosin 4 sequesters this protein, which undergoes treadmilling because the critical concentration at its (+) and (-) ends is not the same. This protein consists of G monomers which polymerize into F filaments, which make up the microfilaments of the cytoskeleton. For 10 points, name this protein that forms cross-bridges with myosin in muscle cells.
Science

One novel by this author deals with the ill-stricken Milly Theale and the impact she has on the people around her. In addition to the novels, The Wings of the Dove, The Bostonians and The Ambassadors, this author wrote of a work in which Miles and Flora encounter the ghosts of Peter Quint and Miss Jessel. In this author's most famous work, Isabel Archer rejects the hand of Caspar Goodwin and accepts Gilbert Osmond's proposal of marriage. For 10 points, name this American writer of works such as Daisy Miller, The Turn of the Screw, and Portrait of a Lady.
Literature