Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Textbook Question
Chapter 25.4, Problem 1CC
Justify the claim that photosynthetic protists are among the biosphere’s most important organisms.
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The endosymbiont theory states that mitochondria andchloroplasts evolved from symbiotic relationshipsestablished between bacteria-like cells and theprecursors of eukaryotic cells that engulfed them on what basis
This single-celled or multicelled eukaryotic consumer breaks down material outside itself, then absorbs nutrients released from the breakdown.
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Chapter 25 Solutions
Campbell Biology in Focus
Ch. 25.1 - Describe major events in the evolution of early...Ch. 25.1 - Explain why eukaryotes are said to be combination...Ch. 25.1 - Prob. 3CCCh. 25.2 - Summarize the evidence that choanoflagellates are...Ch. 25.2 - MAKE CONNECTlONS Describe how the origin of...Ch. 25.2 - Prob. 3CCCh. 25.3 - Briefly describe the organisms found in each of...Ch. 25.3 - MAKE CONNECTIONS Review Figures 7.2 and 8.5...Ch. 25.3 - Prob. 3CCCh. 25.3 - Prob. 4CC
Ch. 25.4 - Justify the claim that photosynthetic protists are...Ch. 25.4 - Prob. 2CCCh. 25.4 - Prob. 3CCCh. 25 - The oldest fossil eukaryote that can be resolved...Ch. 25 - Prob. 2TYUCh. 25 - Plastids that are surrounded by more than two...Ch. 25 - Prob. 4TYUCh. 25 - Prob. 5TYUCh. 25 - Based on the phylogenetic tree in Figure 25.10,...Ch. 25 - MAKE CONNECTIONS The bacterium Wolbachia is a...Ch. 25 - FOCUS ON EVOLUTION DRAW IT Medical researchers...Ch. 25 - FOCUS ON INTERACTIONS Organisms interact with each...Ch. 25 - SYNTHESIZE YOUR KNOWLEDGE These micrographs show...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Practice Biology Question: Some prokaryotes play essential roles in the ecology of the biosphere. Give examples and describe their impacts.arrow_forwardexplain why is more a web of life than a tree of life endosimbiotic theoryarrow_forwardWhy are the protists in termites obligate endosymbionts? question # 8arrow_forward
- A group of environmentalists is studying the effects of recent commercial zoning to wildlife acreage on the biodiversity of a rural county. The group noted a steady decline in the population of animals, while bacteria and other protists remained constant. Which statement best discusses the reasons for the steady decline of animals as opposed to the protists? A. Bacterial growth is usually not affected by environmental changes because of asexual reproduction. B. The animals could not adapt to the new environment. C. Bacteria lived in areas that were not affected by the zoning D. The animals became susceptible to human and environmental harm.arrow_forwardUsing the concept of Scale, describe the similarities between the variety of microorganisms that live in your teeth (they have an ecology like any other community) and a patch of grassland.arrow_forwardWhich of the following provide evidence for an endosymbiotic origin of mitochondria and chloroplasts? Choose all the correct statements. Group of answer choices They are about the same size as free-living cyanobacteria and alpha proteobacteria. The nuclear membrane of eukaryotes is similar to the archaean cell membrane. Organelle genes are often more similar to bacterial genes than those of their eukaryotic host. These organelles have their own circular genomic DNA.arrow_forward
- Which of the following observations constitutes evidence that mitochondria evolved before chloroplasts? Mitochondria are aerobic. Chloroplasts are photosynthetic. Aerobic bacteria evolved before photosynthetic bacteria (cyanobacteria). Some protists have separately evolved their own plastids (chloroplast-like structures) through endosymbiosis of cyanobacteria, or even through endosymbiosis of photosynthetic protists. All Eukaryotes have mitochondria; only a subset of Eukaryotes have chloroplasts.arrow_forwardThe amoeba Pelomyxa palustris is a single-celled eukaryote with nomitochondria, but it contains symbiotic bacteria that can live in thepresence of oxygen. How does this observation support theendosymbiont theory?arrow_forwardThere are several types of symbiotic relationshipsarrow_forward
- Identify the organism that is not an autotroph. photosynthetic bacteria earthworms plants phytoplanktonarrow_forwardExplain the difference between an ecosystem and a habitat. Why are some microbial habitats unsuitable for plant and animal life?arrow_forwardPlease answer ASAP Which statement best describes the primary difference between bacteria and protists? In terms of cellular organization, protists are multicellular microbes and are prokaryotes. In terms of cellular organization, bacteria are single-celled microbes and are prokaryotes. In terms of cellular organization, protists are multicellular microbes and are chemoautotrophs. In terms of cellular organization, bacteria are single-celled microbes and are eukaryotes.arrow_forward
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