Avery and his colleagues' 1944 experiment showed that DNA __________.

In his work with pneumonia-causing bacteria and mice, Griffith found thata. the protein coat from pathogenic cells was able to transform nonpathogenic cells.b. heat-killed pathogenic cells caused pneumonia.c. some substance from pathogenic cells was transferred to nonpathogenic cells, making them pathogenic.d. the polysaccharide coat of bacteria caused pneumonia.

During Griffith's experiments with Streptococcus pneumoniae in mice, material from __________ bacteria transformed __________ bacteria.

In his work with pneumonia-causing bacteria and mice, Griffith found thata. the protein coat from pathogenic cells was able to transform nonpathogenic cells.b. heat-killed pathogenic cells caused pneumonia.c. some substance from pathogenic cells was transferred to nonpathogenic cells, making them pathogenic.d. the polysaccharide coat of bacteria caused pneumonia.