Question Detail

MIC 121 Introductory Microbiology Objective Question

Question

John Needham's experiment, which seemingly supported spontaneous generation, involved boiling meat broth for a short period and then leaving it open. What was his primary claim regarding the growth of microbes in his broth?
Options
A Microbes spontaneously generated from the air.
B The boiling was insufficient to kill all existing microbes.
C Life was present in non-living matter, including air, causing spontaneous generation.
Correct Answer
D The broth was contaminated by microorganisms from the cork.
Correct Answer

Option C is the correct answer.

Detailed Explanation

John Needham concluded that there was 'life' present in non-living matter, including air and the oxygen in it, that could cause spontaneous generation to occur. He believed this explained the presence of microorganisms in his boiled broth after it was left open, rather than contamination from the environment.

Hint

Needham affirmed the theory, so consider what he believed caused the new life in his broth.

Question Info