Nonvirulent bacteria can still be transformed into virulent bacteria if it is combined with debris from heat-killed virulent bacteria that is first treated with: (select all that apply.)

Nonvirulent bacteria can still be transformed into virulent bacteria if it is combined with debris from heat-killed virulent bacteria that is first treated with RNase, protease, or no enzyme because these are important factors for the establishment of virulence and are often required when bacteria modify their genetic record in response to the conflicting or adverse situations.