Oswald Avery found that an "infectious principle" could be transferred from dead, virulent streptococcus bacteria to living, avirulent bacteria, causing them to become virulent. Which of the following is NOT true of this infectious principle?

W) This material can be separated from protein in an ultracentrifuge [ultra-SEN-trih-fyoojl]

X) RNA-digesting enzymes have no effect on the activity of this material

Y) Performing a hydrophobic [high-droh-FOH-bik] extraction removes the material from water

Z) DNAse [D.N. ace] destroys all activity of this material
Y) PERFORMING A HYDROphobic EXTRACTION REMOVES THE MATERIAL FROM WATER