Loose Leaf Version for Biology: Concepts and Investigations
4th Edition
ISBN: 9781260152128
Author: Mariëlle Hoefnagels Dr.
Publisher: McGraw-Hill Education
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Question
Chapter 15.1, Problem 3MC
Summary Introduction
To determine:
Why the RNA is likely to have been pivotal in life’s beginning.
Concept introduction:
Some investigators suggest that RNA were the first genetic material. They have used the term “RNA world” to describe this phenomenon. The RNA has several characteristics that make it suitable for carrying genetic information and transmitting it from one generation to another.
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Which molecule is believed to have preceded the other two during the evolution of life?
RNA
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Why is RNA likely to have been pivotal in life’s beginnings?
During the course of evolution why DNA was choosen over RNA as genetic materials?
Chapter 15 Solutions
Loose Leaf Version for 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 - Name and describe the three groups of contemporary...Ch. 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 - List the major events of the Precambrian supereon...Ch. 15 - Prob. 8WIOCh. 15 - Distinguish among the terms primate, hominid,...Ch. 15 - Explain how opposable thumbs, large brains, and...Ch. 15 - Prob. 11WIOCh. 15 - Prob. 12WIOCh. 15 - Use the Internet to learn about National...Ch. 15 - In what ways has culture been an important factor...Ch. 15 - Compare todays changing culture to biological...Ch. 15 - Prob. 16WIOCh. 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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- How does the structure of a DNA molecule help account for the great variety of life that exists on earth?arrow_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_forwardIf life comes from life, where did the first living organisms come from?arrow_forward
- In 40 words or fewer, explain why we think that RNA, and not DNA, was the hereditary material in the first protocell.arrow_forwardwhat 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 eukaryotesarrow_forwardWhy were cyanobacteria so important in the evolution of life onEarth?arrow_forward
- If RNA played a key role in the origin of life,why do cells now use DNA for information storage and proteins to carry out other cellular processes?arrow_forwardProvide a brief discussion in support of the following statement: “RNA is believed to have played an important role during the origin of life.”arrow_forwardThe most pivotal event in the history of life on Earth, allowing for the emergence of eukaryotic cells, was the _____________.arrow_forward
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DNA vs RNA (Updated); Author: Amoeba Sisters;https://www.youtube.com/watch?v=JQByjprj_mA;License: Standard youtube license