Biology: Life on Earth (11th Edition)
11th Edition
ISBN: 9780134168296
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Textbook Question
Chapter 18, Problem 3RQ
Explain the endosymbiont hypothesis for the origin of chloroplasts and mitochondria.
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Diagram the endosymbiotic theory of the origin of mitochondria and chloroplasts
Describe the features of mitochondria and chloroplasts that support the endosymbiotic theory.
Define the endosymbiotic theory. Explain how mitochondria and chloroplasts evolved by endosymbiosis. Explain 4 pieces of evidence for the Endosymbiotic Theory.
Chapter 18 Solutions
Biology: Life on Earth (11th Edition)
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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- Would the evidence suggest that mitochondria or chloroplasts were the first to evolve through endosymbiosis?arrow_forwardTo explain: The endosymbiont hypothesis for the origin of chloroplast and mitochondria.arrow_forwardExplain how the discovery of cytoskeletal elements in prokaryotes contributed to the current understanding of the endosymbiont theory.arrow_forward
- describe a scenario for the evolutionary origin of protist chloroplasts?arrow_forwardThe theory of the endosymbiotic origin of mitochondria and chloroplasts was first proposed by the biologist Lynn Which of the following statements provides support for the theory of endosymbiosis? 1. All the genes found in chloroplasts are homologous to genes found in the nucleus of eukaryotic cell. 2. Mitochondria contain their own ribosomes. 3. Proteins need a targeting sequence to be imported into a chloroplast. 4. Mitochondria can generate a proton gradient and harness it to synthesize ATP. O A. 1, 2 and 3 B. 1 and 3 C. 2 and 4 D. 4 only E. All of 1, 2, 3 and 4 are correct.arrow_forwardBriefly describe the idea of Endosymbiosis and how it is associated with the formation of the first Eukaryotic cells.arrow_forward
- Briefly explain how the production of oxygen by early photosynthetic organisms lead to colonization of land. arrow_forwardTo explain: The DNA sequence of a modern bacterium which is believed to be descended from endosymbiont which gave rise to mitochondria would be similar to chloroplast, nucleus or mitochondrion.arrow_forwardWhat is the major premise of the endosymbiosis theory and what evidence supports the theory?arrow_forward
- Cyanobacteria was responsible for the increase in oxygen levels billions of years ago. They play a decisive role in changing the earth’s environment. Explain how are Cyanobacteria related in changing the early earth’s environment which later suitable for the development of other organisms.arrow_forwardThe theory endosymbiosis is important in understanding how mitochondria and eukaryotic cells may have evolved.what structure is central to the concept of endosymbiosisarrow_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_forward
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Endosymbiotic Theory; Author: Amoeba Sisters;https://www.youtube.com/watch?v=FGnS-Xk0ZqU;License: Standard Youtube License