What hormone promotes cell elongation in stems?  

What is the major component of most plant cell walls?  

The greenhouse effect causes an increase in global temperatures. This increase is due primarily to ________.  

Which mode of nutrition characteristic distinguishes animals from other eukaryotes?  

  The Baroque period was the first in which instrumental music was comparable in importance to vocal music.  

  Beethoven served as a bridge between the Classical style and the Romantic era.  

  Which of the following are characteristic of opera seria?  

  A song whose text is a short lyric poem in German with piano accompaniment is called a  

  In which musical style did Copland compose?  

  Which of the following excerpts from the “Hallelujah Chorus” of Handel’s Messiah features imitative polyphony, with the voices building from lowest to highest?   Excerpt 1   Excerpt 2