Which of the Following Was NOT an Aspect of Pasteurʹs

Multiple Choice

Which of the following was NOT an aspect of Pasteurʹs experiments to disprove spontaneous generation?

A) He boiled the infusions to kill any microbes present.
B) The necks of the flasks he used were bent into an S-shape.
C) The flasks he used were sealed with corks.
D) The flasks were free of microbes until they were opened.
E) The flasks were incubated for very long periods of time.