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Questions and Answers
Which scientist conducted experiments to test whether sterile nutrient broth could spontaneously generate microbial life?
Which scientist conducted experiments to test whether sterile nutrient broth could spontaneously generate microbial life?
- Louis Pasteur (correct)
- Alexander Fleming
- Robert Koch
- Antonie van Leeuwenhoek
What was the purpose of bending the necks of the flasks into S shapes in Pasteur's experiment?
What was the purpose of bending the necks of the flasks into S shapes in Pasteur's experiment?
- To expose the nutrient broth to air from above (correct)
- To kill existing microbes
- To sterilize the nutrient broth
- To prevent the nutrient broth from boiling
What was the result of Pasteur's experiment where the swan necks were broken off the flasks?
What was the result of Pasteur's experiment where the swan necks were broken off the flasks?
- The experiment failed
- The nutrient broth boiled
- The broth remained clear
- The broth turned cloudy (correct)
According to the cell theory, what is the smallest unit of life?
According to the cell theory, what is the smallest unit of life?
What evidence supports the theory that cells can only be formed by division of pre-existing cells?
What evidence supports the theory that cells can only be formed by division of pre-existing cells?
What are some key problems in understanding how the first cells arose?
What are some key problems in understanding how the first cells arose?
According to the Miller and Urey experiments, what conditions were recreated in the lab to simulate the formation of organic molecules in the primeval soup?
According to the Miller and Urey experiments, what conditions were recreated in the lab to simulate the formation of organic molecules in the primeval soup?
Based on Miller and Urey's findings, what was concluded about the formation of organic molecules under the hypothesized conditions of prebiotic Earth?
Based on Miller and Urey's findings, what was concluded about the formation of organic molecules under the hypothesized conditions of prebiotic Earth?
According to the endosymbiotic theory, how did organelles such as mitochondria and chloroplasts originate in eukaryotic cells?
According to the endosymbiotic theory, how did organelles such as mitochondria and chloroplasts originate in eukaryotic cells?
Which one of the following statements is true about endosymbionts?
Which one of the following statements is true about endosymbionts?
What is the main difference between the development of chloroplasts and mitochondria?
What is the main difference between the development of chloroplasts and mitochondria?
What evidence supports the endosymbiotic theory for mitochondria and chloroplasts?
What evidence supports the endosymbiotic theory for mitochondria and chloroplasts?
What is LUCA?
What is LUCA?
What is the estimated age of LUCA?
What is the estimated age of LUCA?
Why are hydrothermal vents hypothesized as potential sites for life's origin?
Why are hydrothermal vents hypothesized as potential sites for life's origin?
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