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.
Carlo Gesualdo D. Adrian Willaert22. A cappella refers toA. unaccompanied choral musicB. men taking their hats off in churchC. singing in a hushed manner because one is in churchD. any form of music appropriate for church use23. Which of the following is not true of Venice in the sixteenth century?A.