If you were a microbiologist in 1950,which of the following scientific principles would you already know?

Question

Quizplus · Accepted Answer

Aseptic techniques had been developed in the 19th century and were already widely used to reduce wound infections in surgeries by the 1950s.

Answer: C 
 Enzymes found in bacteria that can cut DNA, such as restriction enzymes, were discovered in the late 1960s and 1970s. Therefore, a microbiologist in 1950 would not know this principle.

Answer: D 
 The process of transcription and translation was not fully understood until the 1960s. Therefore, a microbiologist in 1950 would not know this principle.

Therefore, the best choice is A.

If You Were a Microbiologist in 1950,which of the Following