BIOLOGY: LIFE ON EARTH-W/MASTERING ACCE
2020th Edition
ISBN: 9780135686553
Author: Audesirk
Publisher: PEARSON
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Chapter 18, Problem 2RQ
Summary Introduction
To review:
The effect of photosynthesis in the subsequent evolution of life on the earth.
Introduction:
After the origin of a living cell, some of them evolved to produce high energy complex molecule (glucose) from the simple molecule [water (H2O), carbon dioxide (CO2)] using sunlight. This process is known as photosynthesis, which gave rise to oxygen.
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How did the photosynthesis process allow for the evolution of other, non-photosynthetic organisms?
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Chapter 18 Solutions
BIOLOGY: LIFE ON EARTH-W/MASTERING ACCE
Ch. 18 - 1. Almost all of the oxygen gas in today’s...Ch. 18 - Extinction a. generally does not occur except...Ch. 18 - 3. In the endosymbiotic origin of the...Ch. 18 - 4. Which of the following does not list...Ch. 18 - Prob. 5MCCh. 18 - 1. Because there was no oxygen in the earliest...Ch. 18 - 2. The molecule ________ became a candidate for...Ch. 18 - 3. Complex cells that contain a nucleus and other...Ch. 18 - 4. The sperm of early land plants had to reach the...Ch. 18 - 5. Early plants that protected their seeds within...
Ch. 18 - Prob. 6FTBCh. 18 - Amphibians gave rise to ____________, which had...Ch. 18 - 1. What is the evidence that life might have...Ch. 18 - Prob. 2RQCh. 18 - 3. Explain the endosymbiont hypothesis for the...Ch. 18 - 4. Name two advantages of multicellularity for...Ch. 18 - What advantages and disadvantages would...Ch. 18 - 6. Outline the major adaptations that emerged...Ch. 18 - Outline the evolution of humans from early...Ch. 18 - Extinctions have occurred throughout the history...Ch. 18 - In biological terms, what do you think was the...
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- How the evolution of oxygen was involved in the initial evolution of terrestrial life?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_forwardWas there molecular oxygen in the earth's primitive atmosphere? How has that molecule become abundant?arrow_forward
- Why did the evolution of multicellular organisms such as plants and animals have to be preceded by the evolution of oxygen-producing photosynthesis?arrow_forwardHow can we use the structures that are involved with photosynthesis and cellular respiration to determine the earliest forms of life and how they developed? Why is the study of endosymbosis vital for biology?arrow_forwardWhich scientists investigated the origins of organic molecules on the primordial Earth?arrow_forward
- Why was the evolution of photosynthesizing bacteria important for the evolution of large, oxygen-consuming organisms like ourselves?arrow_forwardHow is origin of life attributed to LIGHT and WATER? Give a detailed explanation.arrow_forwardWhat provided energy for a biotic synthesis on primitive earth?arrow_forward
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