BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
3rd Edition
ISBN: 9781260670929
Author: Hoefnagels
Publisher: MCG CUSTOM
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Chapter 15.1, Problem 3MC
Summary Introduction
To explain:
The reasons due to which RNA could have been a pivotal molecule at the beginning of life on the earth.
Introduction:
The evidence acquired from different researchers suggests that molecules of RNA were formed on the surfaces of clay. Positive charges present on the surfaces of the clay were able to attract and hold negatively charged RNA molecules.
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Which molecule is believed to have preceded the other two during the evolution of life?
RNA
Proteins
DNA
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
BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
Ch. 15.1 - Prob. 1MCCh. 15.1 - What we can learn from simulations of early Earth?Ch. 15.1 - Prob. 3MCCh. 15.1 - Prob. 4MCCh. 15.2 - Prob. 1MCCh. 15.2 - Without looking at figure 15.9, sketch the...Ch. 15.2 - Prob. 3MCCh. 15.2 - In what ways bacteria and archaea are essential to...Ch. 15.2 - Prob. 5MCCh. 15.3 - Prob. 1MC
Ch. 15.3 - List a logical sequence of evolutionary events...Ch. 15.4 - Prob. 1MCCh. 15.4 - Prob. 2MCCh. 15.4 - Prob. 3MCCh. 15.5 - Prob. 1MCCh. 15.5 - Prob. 2MCCh. 15.5 - Prob. 3MCCh. 15.5 - How do fungi benefit humans?Ch. 15.5 - Prob. 5MCCh. 15 - Prob. 1MCQCh. 15 - Prob. 2MCQCh. 15 - Prob. 3MCQCh. 15 - Prob. 4MCQCh. 15 - Prob. 5MCQCh. 15 - If you were developing a new broad-spectrum...Ch. 15 - Prob. 2WIOCh. 15 - Prob. 3WIOCh. 15 - Prob. 4WIOCh. 15 - Prob. 5WIOCh. 15 - Prob. 1SLCh. 15 - Review the Survey the Landscape figure in the...Ch. 15 - Prob. 2PIT
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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