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- Which of the following was likely MOST important for life to begin existing on Earth? A. sunlight B. DNA C. a source of oxygen D. a source of energyWhich 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 correctwhat 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 eukaryotes
- Summarize the theories on how life on Earth began A. Inorganic molecule form organic molecules. B. Organic molecules form comets.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.Choose the answer from the given concept below. A. Extraterrestial Origin B. Divine Creation C. Spontaneous Origin D. Big bang theory 1. this is the oldest among life's origin theories and the most accepted among others. It may vary vary on the practice of a religion, but it's commonality is that a Divine God created life. It is called the 2.Meteorite contains amino acids, nucleotide bases and sugar. Hundreds of thousands of meteorites and comets are known to have fallen into the early Earth, suggesting that it may contain some organic material. It is referred as the 3. Greek philosopher Aristotle proposed a theory eith the idea that living matter may arise from non-living matter. These are based on early observations such as the appearance of maggots in rotting meat, mice on corn and fish from mud of previously dry lakes
- Which of the following is the last step in the Oparin-Haldane Model for the beginning of life? a. Membranes form around the first cells b. Simple molecules assembled into building blocks c. Polymers assembled from simple building blocks d. Asteroids and meteors provide building blocks for life on earthThe first forms of life on Earth were a. plants b. microorganisms c. birds d. dinosaursMiller and Urey created a reaction chamber that simulated conditions in Earths early atmosphere to test the hypothesis that______. a. lightning-fueled atmospheric reactions could have produced organic compounds b. meteorites contain organic compounds c. organic compounds form at hydrothermal vents d. oxygen prevents formation of organic compounds
- Because it's most resistant to deterioration, which type of molecule is most often found in molecular fossils? A. Lipid molecules B. DNÀ molecules C. Protein molecules D. RNA moleculesIn the Urey-Miller experiments with the origin of life forms, what was the purpose of the electric sparks passed through a mixture of gases? Group of answer choices simulate lightning simulate sunlight simulate temperature produce rain from clouds sterilize the gasesDiscuss the hypothesis of Alexander Oparin and John B.S. Haldane about how living matter came to be.