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Name three different sources of energy that could have powered reactions on early earth to form organic compounds.
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- How were biomolecules likely to have formed on the early Earth?Understand the importance of the Miller-Urey experiments that recreated the conditions present in early earth and caused organic molecules to form spontaneously.Describe how scientists have tested the hypothesis that simpleorganic molecules could have formed on the early Earth
- What was Oparin-Haldane hypothesis on the emergence of life on Earth? A. The Earth's amino acids were derived from volcanic eruptions B. The Earth's amino acids were from a 4.5 billion years old meteorite C. Inorganic compounds created organic compounds spontaneously D. Inorganic compounds were results of lightning and UV radiationExplain what the Miller experiments demonstrated aboutthe formation of the first organic molecules.Was there molecular oxygen in the earth's primitive atmosphere? How has that molecule become abundant?
- The Miller-Urey experiment simulated compounds present in the atmosphere of early Earth, lightning, and the evaporation and condensation of atmospheric water. What other information about the conditions on Earth during this time period would you want to know to improve the experimentAn abundance of___________ in Earths early atmosphere would have prevented the spontaneous assembly of organic compounds on early Earth. a. hydrogen b. methane c. oxygen d. nitrogenReview the structures of nucleic acids and proteins in chapter 2. Whatchemical elements had to have been in primordial “soup” to generatethese organic molecules?
- what simple organic molecules were likely the precursors of life? a. water and proteins b. amino acids and nucleotides c. oxygen and carbon d. prokaryotes and eukaryotesWhose discovery made the dating of ancient materials possible?Summarize the theories on how life on Earth began A. Inorganic molecule form organic molecules. B. Organic molecules form comets.