* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Ch 25 Origin of Life on Earth Guided Rdg
Survey
Document related concepts
Artificial gene synthesis wikipedia , lookup
Vectors in gene therapy wikipedia , lookup
Genetic engineering wikipedia , lookup
Koinophilia wikipedia , lookup
Non-coding DNA wikipedia , lookup
Transitional fossil wikipedia , lookup
Epitranscriptome wikipedia , lookup
RNA silencing wikipedia , lookup
History of genetic engineering wikipedia , lookup
Nucleic acid tertiary structure wikipedia , lookup
Non-coding RNA wikipedia , lookup
Primary transcript wikipedia , lookup
Genetic code wikipedia , lookup
Nucleic acid analogue wikipedia , lookup
History of RNA biology wikipedia , lookup
Transcript
Origin of Life on Earth Guide Reading Biology, 8th Edition, 25.1 (507-510). If any of the questions is not explicitly defined in the reading, you are responsible for using your text or another reliable source to answer the questions. 1. Define the term macroevolution. 2. Describe the 4 main stages that may have produced the first cells. Note: This does not mean copy the 4 steps on page 508. You must read the rest of the section and pull out the key points. 3. When do scientists estimate that the Earth form? 4. Life developed about 3.9-3.8 billion years ago. Describe the conditions of Earth’s atmosphere during this time. 5. What is meant by the term “primitive soup”? 6. Describe or draw and label a picture of the Miller-Urey Experiment. What did their experiment accomplish? (p 59) 7. What evidence has been found that supports the abiotic synthesis of molecules as shown in the Miller-Urey experiment? 8. What is an amino acid? 9. What is a nucleotide? 10. Why is RNA thought to be the first genetic material? 11. Today, DNA, not RNA is the primary carrier of genetic information. Why do scientists think the switch from RNA to DNA occurred? 12. Why is the fossil record considered an “incomplete chronicle of evolutionary change”? 13. How are rocks and fossils dated? Use the terms radiometric dating & half-life in your answer. 14. What was the oxygen revolution & what impact did this have on life? 15. What is serial endosymbiosis? (*This would be a good time to draw a diagram like the one in the book!) 16. What was the Cambrian explosion? 17. When did the colonization of land begin, & what are some adaptations that were necessary to survive outside an aquatic environment? 18. Over time, life on Earth has seen the rise and fall of groups of organisms. Briefly explain each of the large-scale processes that were at work to cause these changes. a. Continental Drift- b. Mass Extinctions- c. Adaptive Radiations-