Campbell Biology: Custom Edition
18th Edition
ISBN: 9781323717271
Author: Urry, Cain, Wasserman, Minorsky, Reece
Publisher: PEARSON C
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Chapter 25.3, Problem 1CC
The first appearance of free oxygen in the atmosphere likely triggered a massive wave of extinctions among the prokaryotes of the time. Why?
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Chapter 25 Solutions
Campbell Biology: Custom Edition
Ch. 25.1 - What hypothesis did Miller test in his classic...Ch. 25.1 - How would the appearance of protocells have...Ch. 25.1 - MAKE CONNECTIONS In changing from an "RNA world"...Ch. 25.2 - Describe an example from the fossil record that...Ch. 25.2 - WHAT IF? Your measurements indicate that a...Ch. 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 - Level 1: Knowledge/Comprehension 1. Fossilized...Ch. 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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- What event is thought to have contributed to the evolution of eukaryotes? a. global warming b. glaciation c. volcanic activity d. oxygenation of the atmospherearrow_forwardSome prokaryotes, especially archaea, are capable of living in extreme environments, such as deep-sea vents, where temperatures can reach 80°C (176°F). Few organisms can survive at this temperature. What adaptations might archaea possess that allow them to survive in such extreme heat?arrow_forwardWhat effect did the events describe endosymbiotic theory have on eukaryotic energy production?arrow_forward
- Why is it very important for us to understand the diversity of prokaryotic organisms since we cannot see them with our naked eyes? What could be the implications if we neglect these organisms and let them be a nuisance topic in Biology?arrow_forwardCyanobacteria 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_forwardWhy are prokaryotes so abundant and have such high diversity?arrow_forward
- Fossil evidence indicates that prokaryotes have been around for about 3.5 billion years, whereas the origin of eukaryotes has been dated at only about 1.5 billion years ago. Suggest why, in spite of the lesser time for evolution, eukaryotes are much more diverse (have a much larger number of species) than prokaryotes.arrow_forwardWhy are archaebacteria called living fossils?arrow_forwardin 1967, Lynn Margulis developed the endosymbiotic theory. As seen in the diagram below, the endosymbiotic theory describes how over thousands of years, free-living prokaryotes formed living communities inside larger ancestral prokaryotic cells. Today, we identify those early free-living prokaryotes as the mitochondria, chioroplasts, and possibly other organelles. Endesymbietic Theery How did the development of Margulis' theory aid in our understanding of how complex organisms came into existence? A. It provided an explanation as to why prokaryotic cells do not have a nucdeus. B. It provides an explanation as to why bacteria and mitochondria are similar in size. C. It provides an explanation of how life today could have originated from a single cell. D. It provides an explanation of how prokaryotic and eukaryotic cells use oxygen to work.arrow_forward
- The extra energy required for the evolution of the highly complex eukaryotic cell was possible because: a) mesosomes released enzymes into the nucleus b) two types of prokaryotic bacteria became endo symbiotic invaders of the complex cells c) the DNA of the eukaryote cell functions within the nucleoid area d) chloroplasts were able to use O2 to conduct photosynthesis e) the space between the two layers of the nuclear membrane contained mitochondriaarrow_forwardAccording to the endosymbiotic theory, which of the following is NOT true about the evolution of life on earth? Eukaryotes and prokaryotes appeared at about the same time and evolved independently from each other. O None of the other four answers (all are true statements) Eukaryotes evolved from symbiotic prokaryotes living inside other prokaryotes Mitochondria and chloroplasts are in some ways similar to prokaryotes The first life on earth was simple organisms, similar to today's prokaryotesarrow_forwardEvolutionary microbiologists developed a theory about a common ancestor for all eukaryotic cells. Below is a model of the theorized changes during the origin of eukaryotic cells. Prokaryotes are not capable of phagocytosis, or engulfing outside particles by creating a pocket in the cell membrane. Which of the following changes in early prokaryotes could be predicted to result in the emergence of eukaryotic organisms? A - the development of genetic transfer mechanisms in prokaryotes B - the evolution of predatory or parasitic relationships in prokaryotes C - the emergence of collections of cells functioning together in prokaryotes D = the expansion of internal structures to support larger individual cells in prokaryotesarrow_forward
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Endosymbiotic Theory; Author: Amoeba Sisters;https://www.youtube.com/watch?v=FGnS-Xk0ZqU;License: Standard Youtube License