Which of these did Stanley Miller place in his experimental systemto show that organic molecules could have arisen from inorganicmolecules on the early Earth?a. microspheresb. purines and pyrimidinesc. gases found in the atmosphere of early Earthd. only RNAe. All of these are correct.
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Which of these did Stanley Miller place in his experimental system
to show that organic molecules could have arisen from inorganic
molecules on the early Earth?
a. microspheres
b. purines and pyrimidines
c. gases found in the atmosphere of early Earth
d. only RNA
e. All of these are correct.
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Solved in 2 steps
- Which of the following did Stanley miller place in the experimental system to show that organic monomers could have risen from inorganic molecules on the early Earth? A. Only RNA B. Microspheres C. Purines and pyrimidines D. All of these are correctWhich of the following represent issues of great uncertainty regarding early Earth? Choose one or more: ✓ A. whether early life forms were thermophiles or psychrophiles B. whether first life was prokaryotic or eukaryotic C. whether life evolved here or was of extraplanetary origin D. whether first organisms were aerobes or anaerobes O E. role of methanogens and atmospheric methaneAn 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. nitrogen
- Understand the importance of the Miller-Urey experiments that recreated the conditions present in early earth and caused organic molecules to form spontaneously.Which staterment from the choices below, BEST describes scientists current understanding of the conditions required for the origin of life on Earth? Earth's early atmosphere contained mos tly carbon dioxide. In addition, water vapor condensed and fell as rain forming pools Lightning provided the energy noeded for reactions an earth. Earth's early atmosphere contained mostly oxygen. In addition, there was no liquid water during this time. Lightring provided the energy necded for reactions on earth. O Earth's early atmosphere contained mostiy nitrogen. In addition, there was no liquid water during this time. Lightning provided the energy needed for reactions on earth O Earth's early atmosphere contained a mixture of gases. In addition, water vapor condensed and felI as rain forming pools. Lightning provided the energy needed for reactions on earthChoose the best below ? Which of these steps probably occurred first in the chemical andbiological evolution of life? a. The cell membrane of a protobiont formed.b. Formation of the first organic moleculesc. The genetic material was RNA.d. Simple organic monomers formed from inorganic materials.
- 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 experimentSummarize the theories on how life on Earth began A. Inorganic molecule form organic molecules. B. Organic molecules form comets.Describe how scientists have tested the hypothesis that simpleorganic molecules could have formed on the early Earth