Oswald avery and colleagues strengthened scientific support that dna was the transforming factor by replicating the griffith experiment with some important differences in experimental design. they found that the enzyme was effective at destroying the transforming capacity of s strain biomolecules.
a) protease (protein destruction)
b) rnase (rna destruction)
c) dnase (dna destruction)
d) polysaccharide-destroying enzymes
e) lipase (lipid destruction)

Which of the following statements is true? 1. the mantle of the earth is made of solid nickel and iron. 2. the crust of the earth is made of solid nickel and iron. 3. the inner core is made of solid nickel and iron.

How does pregnancy begin? a) a placenta forms in the uterus b) a sperm reaches an egg in the fallopian tubec) the blastocyst differentiates into two cell types d) contractions begin in the uterine wallapex

Recent research by marine biologists suggests that bottlenose dolphins have names for themselves. scientists played sounds they had identified as the names of particular dolphins, putting them through a synthesizer so that they did not sound like the voices of particular dolphins. the researchers found that dolphins would respond to the names of other dolphins that they were related to or associated with, but they ignored the names of strangers. this discovery suggests a much greater degree of self-awareness in aquatic mammals than was previously suspected. if this research holds up, what does it suggest about dolphins?