Miller and Urey were able to support the hypothesis that life could have arisen through chemical/physical processes available on Earth 3.5+ billion years ago by heating and cooling CH4, NH3, H2, and H2O. What did they find when they did so? A) Lipids formed in these conditions B) Amino acids formed in these conditions C) Nucleic acids formed in these conditions D) Carbohydrates formed in these conditions

Miller and Urey were able to support the hypothesis that life could have arisen through chemical/physical processes available on Earth 3.5+ billion years ago by heating and cooling CH4, NH3, H2, and H2O. What did they find when they did so? A) Lipids formed in these conditions B) Amino acids formed in these conditions C) Nucleic acids formed in these conditions D) Carbohydrates formed in these conditions

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter18: Life's Origin And Early Evolution

Section: Chapter Questions

Problem 4SA: Miller and Urey created a reaction chamber that simulated conditions in Earths early atmosphere to...

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Which of the following questions about the origin of life on Earth is most scientifically testable? * Why were the earliest life-forms created using only twenty amino acids? Did life originate to make the universe a better place? Was catalytic RNA used by ancient organisms as a stepping stone to acquire protein enzymes? Can simple organic molecules form spontaneously in an oxygen-free atmosphere?
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Will life on Earth be possible if any of the four subsystems are missing?
Nitrogen fixation is a natural process by which inert or unreactive forms of nitrogen are transformed into usable nitrogen. Why is this process important to life? Given what you have learned about the hydrogen bonding shared between nucleic acids in DNA, which pair is more stable under increasing heat: adenine and thymine, or cytosine and guanine? Explain why. Which of the following is not an organic molecule: methane (CH4), fructose (C6H12O6), rosane (C20H36), or ammonia (NH3)? How do you know?
the landmark experiment by Miller and Urey, and various repeats of this experiment, did not successfully recreate life itself, but why do we consider the results from this experiment as support for the origin of life on Earth?
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In the 1950s, scientists Miller and Urey conducted a classic experiment in which water, methane, ammonia, and hydrogenwere sealed in a flask containing a pair of electrodes. An electric spark was fired between the electrodes, and after a week'stime, they found that amino acids were present in the flask. Which of the following best explains the significance of thisexperiment in explaining the origin of life on Earth?
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In the prebiotic world, the chemical evolution scenario proposes that: Small inorganic compounds gave rise to simple biomolecules from meteorites impacts on the Earth surface. Large inorganic compounds gave rise to simple biomolecules when sparked by lighting Small inorganic compounds gave rise to simple biomolecules when dissolved in sulfuric acid Simple biomolecules were created by primitive bacteria Small inorganic compounds gave rise to simple biomolecules when sparked by lighting.

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	A)	Lipids formed in these conditions
	B)	Amino acids formed in these conditions
	C)	Nucleic acids formed in these conditions
	D)	Carbohydrates formed in these conditions