BIOLOGY-CUSTOM PACKAGE W/CODE
14th Edition
ISBN: 9781269866415
Author: Campbell
Publisher: PEARSON C
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Textbook Question
Chapter 25, Problem 2TYU
The oxygen revolution changed Earth's environment dramatically. Which of the following took advantage of the presence of free oxygen in the oceans and atmosphere?
- (A) the evolution of
cellular respiration , which used oxygen to help harvest energy from organic molecules - (B) the persistence of some animal groups in anaerobic habitats
- (C) the evolution of photosynthetic pigments that protected early algae from the corrosive effects of oxygen
- (D) the evolution of chloroplasts after early protists incorpo-rated photosynthetic cyanobacteria
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How the evolution of oxygen was involved in the initial evolution of terrestrial life?
Chronologically arrange the evolutionary events with 1 being the earliest and 6 the most recent.
____
1
a. Onset of oxygen-releasing pathway of photosynthesis
____
2
b.Liquid water appears
____
3
c.Origin of protocells
____
4
d. Emmergence of the first eukaryotes
____
5
e. Origin of chloroplasts
____
6
f. The big bang
Scientist have determined that the early Earth had no free oxygen anywhere. Briefly explain what evidence in
the rock layers that scientists found to prove when the early conditions on earth had free oxygen in the
atmosphere.
Chapter 25 Solutions
BIOLOGY-CUSTOM PACKAGE W/CODE
Ch. 25.1 - What hypothesis did Miller test in his classic...Ch. 25.1 - How would the appearance of protocells have...Ch. 25.1 - Prob. 3CCCh. 25.2 - WHAT IF? Your measurements indicate that a...Ch. 25.2 - Describe an example from the fossil record that...Ch. 25.2 - Prob. 3CCCh. 25.3 - The first appearance of free oxygen in the...Ch. 25.3 - What evidence supports the hypothesis that...Ch. 25.3 - WHAT IF? What would a fossil record of life today...Ch. 25.4 - Explain the consequences of plate tectonics for...
Ch. 25.4 - What factors promote adaptive radiations?Ch. 25.4 - Prob. 3CCCh. 25.5 - Explain how new body forms can originate by...Ch. 25.5 - Why is it likely that Hox genes have played a...Ch. 25.5 - MAKE CONNECTIONS Given that changes in morphology...Ch. 25.6 - How can the Darwinian concept of descent with...Ch. 25.6 - Prob. 2CCCh. 25 - Describe the roles that montmorillonite clay and...Ch. 25 - What are the challenges of estimating the ages of...Ch. 25 - What is the "Cambrian explosion," and why is it...Ch. 25 - Explain how the broad evolutionary changes seen in...Ch. 25 - How could changes in a Single gene or DNA region...Ch. 25 - Explain the reasoning behind the Statement...Ch. 25 - Prob. 1TYUCh. 25 - The oxygen revolution changed Earth's environment...Ch. 25 - Prob. 3TYUCh. 25 - Prob. 4TYUCh. 25 - Which of the following steps has not yet been...Ch. 25 - Prob. 6TYUCh. 25 - Prob. 7TYUCh. 25 - EVOLUTION CONNECTION Describe how gene flow,...Ch. 25 - Prob. 9TYUCh. 25 - WRITE ABOUT A THEME: ORGANIZATION You have seen...Ch. 25 - Prob. 11TYU
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- Why are the two great oxygenation events in the earth’s atmosphere seen as key prerequisites for the development of Eukaryotic life and later Multicellular life?arrow_forwardInvestigate and describe how prokaryotic cells photosynthesize without having chloroplasts. What impact did these organisms have on the geological and evolutionary history of the earth?arrow_forwardWhat is the origin of oxygen on earth? What would happen to earth’s supply of oxygen if photosynthesis suddenly were to cease?arrow_forward
- Why was the evolution of photosynthesizing bacteria important for the evolution of large, oxygen-consuming organisms like ourselves?arrow_forwardOxygen is necessary for the evolution of complex forms of life, What organisms were responsible for changing the carbon cycle by producing oxygen. What was a (likely) major negative consequence of that? Lastly, what is the geological evidence that large quantities of oxygen were produced billions of years ago?arrow_forwardWhich of the evolutionary sequences below does NOT represent how chloroplasts were derived? A.cyanobacteria → red algae →brown algae B.cyanobacteria → green algae → land plants C. cyanobacteria → green algae → fungi → land plants D. cyanobacteria → green algae → red algaearrow_forward
- What is the name of the evolution where carbon, oxygen, nitrogen were formed?arrow_forwardWas there molecular oxygen in the earth's primitive atmosphere? How has that molecule become abundant?arrow_forwardBefore the emergence of life of what gases was the earth's primitive atmosphere constituted?arrow_forward
- During the Early _______________, life consisted of prokaryotic cells, but by the end of this geologic time span, multicellular eukaryotic organisms had evolved. (a) Cenozoic era (b) Paleozoic era (c) Mesozoic era (d) Archaean eon(e) Proterozoic eonarrow_forwardThe oxygen revolution changed Earth’s environmentdramatically. Which of the following took advantage of thepresence of free oxygen in the oceans and atmosphere?(A) the evolution of cellular respiration, which used oxygen tohelp harvest energy from organic molecules(B) the persistence of some animal groups in anaerobichabitats(C) the evolution of photosynthetic pigments that protectedearly algae from the corrosive effects of oxygen(D) the evolution of chloroplasts after early protists incorporated photosynthetic cyanobacteriaarrow_forwardIn what way was the evolution of eukaryotic cells linked to the increase in the oxygen concentration in the atmosphere that occurred during the Precambrian?arrow_forward
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