Oswald Avery, Colin MacLeod and Maclyn McCarty used enzymes to purify
biochemicals such as proteins, DNA and RNA from the heat-killed S cells to see which
ones could transform live R cells into S cells in Griffith's experiment. They observed
that
A. Proteases and RNases affected transformation.
B. DNase inhibited transformation.
C. Proteases and Lipases affected transformation.
D. RNases inhibited transformation.