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.

Q: One work of his, the colossal Saint John the Evangelist currently resides in the Duomo of Florence, but from its creation until 1588, it occupied a place in the faade of the Baptistery, a building which this artist's mentor, Lorenzo Ghiberti, had designed. Following his work on Saint John, he worked on a statue of St. Mark for the Orsanmichele church, where he would also create a statue of Saint George several years later. While working on the sculpture Habbakuk, or Zuccone, he is alleged to have repeatedly muttered "Speak, Damn you, Speak" at the marble he was working with. For ten points, identify this 15th-century artist and sculptor of the Equestrian Monument of Gattamelata and the Bronze David.  

A: Fine Arts
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Q: 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.

A: Science
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Q: Rolipram is an inhibitor of the enzyme that degrades this compound. The asthma and COPD drug theophylline inhibits conversion of pulmonary fibroblasts into myofibroblasts by increasing the intracellular amount of this molecule. The slime moldDictyostelium excretes this molecule to signal aggregation into a sporocarp. This molecule was discovered as part of Earl Sutherland's investigation of the activity of epinephrine. In bacteria, the accumulation of this compound in a low glucose environment is responsible for the upregulation of the lac operon when this compound complexes with CRP. This molecule's inactivation is catalyzed by phosphodiesterase four, and it is produced along with a pyrophosphate in a reaction catalyzed by adenylyl cyclase. For 10 points, name this molecule which primarily activates protein kinase A, a second messenger which is synthesized from ATP.

A:
Science
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