Chapter 25 – The History of Life on Earth REV

Chapter 25 – The History of Life on Earth...

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Chapter 25 – The History of Life on Earth List the 4 main stages that could produced very simple cells in sequence: 1. 2. 3. 4. Early Earth Why couldn’t have organisms survived during the early years of Earth’s creation? What about the oceans? What composed Earth’s early atmosphere? What did Oparin and Haldane hypothesize? What is the Miller-Urey experiment? What were the findings/shortcomings? What is the significance of meteorites in the formation of organic molecules? Protocells What are the two functions/processes require for life? As complex as these two functions are, how did they appear in protocells? What is the function of the vesicle? How are they formed? Discuss the importance of montmorillonite. How would a selectively permeable membrane contribute to proliferation? Self-Replicating RNA and the Dawn of Natural Selection Which came first? RNA or DNA How are ribosomes and RNA interrelated? What is necessary for this relationship to occur? How is natural selection relevant to ribosomes? What are the adaption(s)? Are mutations beneficial or harmful? Explain. Describe natural selection of vesicles and protocells. How is RNA an example of vestigial structure? Concept Check 1. What hypothesis did Miller test in his classic experiment? 2. How would the appearance of protocells have presented a key step in the origin of life? 3.
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Chapter 25 – The History of Life on Earth...

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