Recall Pasteur's Experiment on Spontaneous Generation

question 22

Multiple Choice

Recall Pasteur's experiment on spontaneous generation.Originally,he used sealed and unsealed flasks instead of swan-necked and unsealed flasks.Critics claimed that the experiment was inconclusive.Which of the following criticisms would be addressed by using a swan-necked flask instead of the sealed flask?

• A)The broth was heated too intensively.
• B)There had not been enough time for spontaneous generation to occur.
• C)Fresh air is required for spontaneous generation.
• D)The broth was not nutritious enough.