Multiple Choice
Why are emerging diseases with very few cases the focus of intense scrutiny in the context of organic chemistry?
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Intro to Organic Chemistry
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How were the designs of Pasteur's and Redi's experiments different in demonstrating the principles of spontaneous generation?
A
Pasteur used heat to kill microorganisms, while Redi used chemical disinfectants.
B
Pasteur used a swan-neck flask to prevent contamination, while Redi used sealed and unsealed jars.
C
Pasteur's experiment involved boiling broth, whereas Redi's involved boiling meat.
D
Pasteur's experiment was conducted in a vacuum, while Redi's was conducted in open air.
Verified step by step guidance1
Understand the concept of spontaneous generation, which is the idea that life can arise from non-living matter. This was a widely held belief until experiments by scientists like Pasteur and Redi challenged it.
Examine Pasteur's experiment: He used a swan-neck flask to demonstrate that microorganisms in the air were responsible for contaminating sterile broth. The design of the flask prevented airborne microorganisms from reaching the broth, thus disproving spontaneous generation.
Analyze Redi's experiment: He used sealed and unsealed jars containing meat to show that maggots only appeared in the meat when flies could access it. This demonstrated that life (maggots) did not spontaneously arise from the meat itself but from eggs laid by flies.
Compare the experimental designs: Pasteur's experiment focused on preventing airborne microorganisms from contaminating the broth using a swan-neck flask, while Redi's experiment focused on preventing flies from accessing the meat using sealed jars.
Reflect on the impact of these experiments: Both Pasteur and Redi provided evidence against spontaneous generation, supporting the idea that life arises from pre-existing life, a principle foundational to modern biology.
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