The transformation experiment was performed on which of the following bacteria?

In $Streptococcus$ $pneumoniae$,which of the following statements is correct?

$A$ molecule that acts as genetic material must fulfill the following criteria,$EXCEPT$:

If a virus is grown in a medium containing radioactive sulfur,which of the following will become radioactive?

Analyze the following experimental steps performed by Frederick Griffith:
$I - R$ strain $\rightarrow$ injected into mice
$II - S$ strain $\rightarrow$ injected into mice
$III - S$ strain (heat-killed) $\rightarrow$ injected into mice
$IV - S$ strain (heat-killed) $+ R$ strain (live) $\rightarrow$ injected into mice
In which of the above stages will the mice remain alive?

Describe the Hershey-Chase experiment. How was it proved that $DNA$ is the genetic material?