Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Chapter 15, Problem 1WIO
Explain how the origin of self-replicating molecules was critical to life’s origin.
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Explain how the origin of self-replicating molecules was critical tolife’s origin.
What did the Miller-Urey experiment demonstrate? A. Life originated in outer space and was brought to Earth on a meteor. B. Complex molecules can be formed from water, carbon dioxide, methane, ammonia, and hydrogen gas in a reducing atmosphere. C. Eukaryotic cells evolved from prokaryotic cells following an endosymbiotic event. D. RNA was the genetic storage merial before DNA.
Scientists Stanley Miller and Harold Urey set up an experiment modeling the environmental conditions thought to exist during the early stages of Earth's formation.
The setup of Miller and Urey's experiment is shown below.
Which conclusion about the origin of life could be drawn from the potential results of this experiment?
Life assembled from chemical building blocks.
Life began when water vapor became electrified.
Life evolved from the DNA of simple unicellular organisms.
Life began when salt water caused a mutation in an ancient virus.
Chapter 15 Solutions
Biology: Concepts and Investigations
Ch. 15.1 - How were conditions on Earth before life began...Ch. 15.1 - Prob. 2MCCh. 15.1 - Prob. 3MCCh. 15.1 - Prob. 4MCCh. 15.2 - How might the endoplasmic reticulum, nuclear...Ch. 15.2 - Prob. 2MCCh. 15.2 - Prob. 3MCCh. 15.3 - Prob. 1MCCh. 15.3 - What types of organisms flourished in the...Ch. 15.3 - How did Palaeozoic life diversify during the...
Ch. 15.3 - Prob. 4MCCh. 15.3 - Prob. 5MCCh. 15.3 - Prob. 6MCCh. 15.4 - Prob. 1MCCh. 15.4 - Prob. 2MCCh. 15.4 - Prob. 3MCCh. 15.4 - Prob. 4MCCh. 15.5 - Prob. 1MCCh. 15.5 - Prob. 2MCCh. 15 - Place the following events in Earths history in...Ch. 15 - Prob. 2MCQCh. 15 - Photosynthetic cells affected early Earth by a....Ch. 15 - Prob. 4MCQCh. 15 - Prob. 5MCQCh. 15 - Prob. 6MCQCh. 15 - Why was the Mesozoic era extinction significant to...Ch. 15 - Primates share all of the following...Ch. 15 - Prob. 9MCQCh. 15 - DNA evidence suggests that modern humans a. share...Ch. 15 - Explain how the origin of self-replicating...Ch. 15 - Prob. 2WIOCh. 15 - Review the structures of nucleic acids and...Ch. 15 - Prob. 4WIOCh. 15 - The amoeba Pelomyxa palustris is a single-celled...Ch. 15 - Prob. 6WIOCh. 15 - Distinguish among the terms primate, hominid,...Ch. 15 - Prob. 8WIOCh. 15 - Prob. 9WIOCh. 15 - Compare todays changing culture to biological...Ch. 15 - Prob. 11WIOCh. 15 - Prob. 1PITCh. 15 - Refer to figure 15.31 and the chapter content to...Ch. 15 - Refer to figure 15.31 and the chapter content to...
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- Explain the difference between evolution and origin of life.arrow_forwardBased on genes from mitochordrial DNA the most accepted tree of life includes three domains. Eukaryotes and archaea are most closely related to each other than either are to bacteria. MRNA rRNA TRNA 0000arrow_forward“What is the origin of life or the main ancestor of all organisms?”, what would be your answer and why?arrow_forward
- Simple systems (of this type) of RNA , enzymes, and coenzymes have been created in the laboratory. Which probable stage of physical and chemical evolution of life is that.arrow_forwardCompare and contrast the evolutionary theory and creationism theory on the origin of life molecules, the origin of prokaryotes, and the origin of eukaryotes.arrow_forwardBased on the Origin of Life by John H. McClendon, how did life on earth start based on the different theories?arrow_forward
- Outline in general terms how small subunit rRNA has been used to define the three domains of lifearrow_forwardWhich molecule -DNA or RNA- do scientist believe was found in the first life form on Earth? Why do scientist believe this molecule was first to form life?arrow_forwardthe 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?arrow_forward
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