Biology Concepts and Investigations 4th Edition (Broward College-Central) BSC 1005
4th Edition
ISBN: 9781307021417
Author: Hoefnagels
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 18, Problem 1WIO
Explain why evolutionary biologists are interested in choanoflagellates, green algae, and organisms with mitochondria whose genomes resemble those of bacteria.
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Discuss the Endosymbiotic Theory. Do you think it is a strong explanation on how the eukaryotes emerged on Earth?
Describe the features of mitochondria and chloroplasts that support the endosymbiotic theory.
Mitochondria and chloroplasts contain some DNA, which more closely resembles prokaryotic DNA than (eukaryotic) nuclear DNA. Use this information to suggest how eukaryotes may have originated.
Chapter 18 Solutions
Biology Concepts and Investigations 4th Edition (Broward College-Central) BSC 1005
Ch. 18.1 - What features define the protists?Ch. 18.1 - Prob. 2MCCh. 18.1 - Why are evolutionary biologists interested in...Ch. 18.2 - Prob. 1MCCh. 18.2 - Prob. 2MCCh. 18.2 - List and describe the characteristics of the major...Ch. 18.3 - What mode of nutrition do the slime molds and...Ch. 18.3 - Prob. 2MCCh. 18.3 - Prob. 3MCCh. 18.4 - Prob. 1MC
Ch. 18.4 - Prob. 2MCCh. 18.4 - List three diseases caused by flagellated...Ch. 18.4 - Compare and contrast amoebae, foraminiferans, and...Ch. 18.4 - How do ciliates move and eat?Ch. 18.4 - Prob. 6MCCh. 18.5 - Prob. 1MCCh. 18.5 - What features unite some of the major lineages of...Ch. 18.6 - Use the food chain in figure 18.21a to explain why...Ch. 18.6 - Prob. 2MCCh. 18 - Which of the following is NOT a characteristic of...Ch. 18 - Suppose you are studying a protist under a...Ch. 18 - Some protist lineages arose from secondary...Ch. 18 - Prob. 4MCQCh. 18 - Why are DNA sequences useful in the classification...Ch. 18 - Explain why evolutionary biologists are interested...Ch. 18 - The amoeba Pelomyxa palustris is a single-celled...Ch. 18 - Describe the relationship between nutrient...Ch. 18 - Explain why the fossil record for diatoms is much...Ch. 18 - How is it adaptive for a red alga to have pigments...Ch. 18 - How are kelp similar to trees? How are they...Ch. 18 - Prob. 7WIOCh. 18 - Prob. 8WIOCh. 18 - Give three examples of protists for which the...Ch. 18 - Suppose someone hands you a microscope and a...Ch. 18 - Review the Survey the Landscape figure in the...Ch. 18 - Prob. 2PITCh. 18 - Molecular data have changed protist...
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- Describe features you would look for under the microscope to determine if a cell is prokaryotic or eukaryotic. If you knew your specimen belonged to Kingdom Protista, would that make it a prokaryote or a eukaryote?arrow_forwardThe endosymbiotic theory argues that prokaryotes become some of the organelles of early eukaryotic cells. All of the following support this hypothesis Except: A. The mitochondria and chloroplasts have their own DNA and are nearly idential to some free-living prokaryotes b. Mitochondria and chloroplasts are nearly idential to some free-living prokaryotes. c. Mitochondria and chloroplasts have their own DNA d. The vacuoles can come and go across the plasma membranearrow_forwardProvide a substantial theory regarding how eukaryoticcells originated and how multicellularity came to be.arrow_forward
- According to the endosymbiotic theory, protoeukaryotes did not have ribosomes until the endosymbiosis with mitochondria was established.arrow_forwardWhat evidence supports the hypothesis that mitochondria preceded plastids in the evolution of Eukaryotes cells?arrow_forwardExplain how the discovery of cytoskeletal elements in prokaryotes contributed to the current understanding of the endosymbiont theory.arrow_forward
- Contrast the cellular and DNA structures of prokaryotesand eukaryotes.arrow_forwardGive an example of structural change that has occurred inchromosomes during evolutionarrow_forwardWhich of the following structures in chlorarachniophytes provides evidence that they evolved through the endosymbiosis of a green alga by a heterotrophic eukaryote? A. food vacuole B. nucleomorph C. mitosomes D. flagellaarrow_forward
- List three sources of evidence that support theendosymbiotic theory of organelle evolution.arrow_forwardContrast and give an example of autotrophic and heterotrophic unicellular eukaryotesarrow_forwardEVOLUTION LINK Why are the protists considered paraphyletic? Use Figure 26-3 to help explain your answer.arrow_forward
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