Formation of the antibiotic resistant and host immune system resistant strain of S. pneumoniae was formed during transformation based on acquisition...

1.   Formation of the antibiotic resistant and host immune system resistant strain of S. pneumoniae was formed during transformation based on acquisition of a capsule forming gene.

A.  What membrane bound structure formed that allowed DNA to bind and enter the cell?

B.   What stage of the growth curve typically would induce the formation of this structure

C.   What type of signal bound the sensor kinase (histidine kinase)?