Virus was discovered by whom

Infective part of virus was discovered by

Reverse transcription was discovered by whom?

The plasma membrane was discovered by whom and in which year?

The plasma membrane was discovered by whom and in which year?

Sexual reproduction by adopting primitive type of DNA transfer from one bacterium to another by a virus was first discovered by :

Sexual reproduction by adopting primitive type of DNA transfer from one bacterium to another by a virus was first discovered by :

When was penicillin discovered and by whom?