Suppose Pasteur's swan-necked flasks containing boiled broth became cloudy twenty-four hours after boiling. Which choice could best explain the turbidity or cloudiness in the broth without supporting spontaneous generation?
A) Endospores in the broth survived boiling and grew after the broth cooled.
B) Contaminating organisms in the broth killed by boiling became alive again after the broth cooled.
C) Chemicals in the broth came together to form living organisms.
D) The broth allowed light to pass through it with less interference after boiling.
E) Solid material in the broth dissolved during boiling.

Question

Quizplus · Accepted Answer

Endospores are resistant to high temperatures and can survive boiling. If the broth was contaminated with endospores, they could survive the boiling process and then grow after the broth had cooled. This would explain the turbidity or cloudiness in the broth without supporting spontaneous generation.

Suppose Pasteur's Swan-Necked Flasks Containing Boiled Broth Became Cloudy Twenty-Four