Membranes contain large amounts of lipids, which are notoriously hydrophobic (water and oil don't mix). The membrane-spanning regions of membrane proteins are typically alpha helices, made of hydrophobic amino acids.
Florence, for example, hosted a brilliant period of musico-theatrical innovation at the dawn of the seventeenth century that led to the flowering of early opera. Rome continued to influence sacred music and for a time became an important center of opera, several types of vocal chamber music, and instrumental music. Venice, a leading musical city throughout the seventeenth century, nurtured the development of opera, as did Naples in the eighteenth century.
1. A style of music characterized by ornamentation and use of counterpoint. The baroque era lasted for about 150 years, beginning in 1600 with the first attempts at opera, and ending in 1750 with the death of its great master, Johann Sebastian Bach.2.. A style of music characterized by ornamentation and use of counterpoint. The baroque era lasted for about 150 years, beginning in 1600 with the first attempts at opera, and ending in 1750 with the death of its great master, Johann Sebastian Bach. 2.