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School

Arizona State University *

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Course

201

Subject

Biology

Date

May 11, 2024

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pdf

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4

Uploaded by MegaPheasant3984 on coursehero.com

5/8/24, 8:33 AM Lesson Activity: Researching the Origin of Life Lesson Activity Researching the Origin of Life This activity will help you meet these educational goals: « You will apply scientific theory to determine if available data and evidence support a given claim. « You will make and defend a claim based on evidence about the natural world that reflects scientific knowledge and experimental evidence. Directions Read the instructions for this self-checked activity. Type in your response to each question, and check your answers. At the end of the activity, write a brief evaluation of your work. Activity Read this article about the evolution of eukaryotes, and then answer the following questions. Part A How did the research presented in the article affect scientists’ understanding of the evolution of eukaryotes? Answer: At first, it was believed that eukaryotes and archaea were more closely related than eukaryotes and bacteria. More evidence, however, points to the participation of both bacteria and archaea in the development of more complex cells. Space used (includes formatting): 3358 / 15000 Show Sample Answer Part B Why is a “ring of life” more appropriate to describe the relationships between archaea, bacteria, and eukaryotes than a “tree of life? https://f1.app.edmentum.com/courseware-delivery/ua/715681/45449327/aHROcHM6LY9IMMS5hcHAUZWRIZW50dWO0uY29tL2x0aS92Mi9sZWFybmV... 1/4
5/8/24, 8:33 AM Lesson Activity: Researching the Origin of Life Answer: The branching tree of life suggests that archaea have a closer relationship to eukaryotic development than does the term "ring of life," which implies that both bacteria and archaea are responsible for eukaryotic cells. Space used (includes formatting): 226 / 15000 Show Sample Answer Part C You learned in the previous section that archaea have ribosomes, similar to eukaryotes. How does this statement support the theory that is presented in the article? Answer: Given that archaea are among the earliest known forms of life on Earth, it is possible that some eukaryotic cell structures, like ribosomes, partially evolved from archaea due to these similarities. Space used (includes formatting): 205 / 15000 Show Sample Answer Part D Why is it important that scientists haven't identified a Lokiarchaeota cell yet? https://f1.app.edmentum.com/courseware-delivery/ua/715681/45449327/aHROcHM6LY9IMMS5hcHAUZWRIZW50dWO0uY29tL2x0aS92Mi9sZWFybmV... 2/4
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