9. Looking at Figure 1 as a reference, to which period belong fossils 400 million years old? 100 million years old? 50 million years old? Figure 1: Geological timeline reference. 10. If the half-life of a radioactive substance is 600 years, what fraction of the original material is left after 1,800 years? Chapter 19: Bacteria, Archaea, and Viruses 11. Which are the 3 domains of life? 12. What is the difference betweek prokaryotic and eukaryotic cells? 13. Are Archaea more closely related to Bacteria, or to Eukarya? 1 14. Which group of living things has a cellular membrane which contains Peptidoglycan? 15. What is lateral gene transfer? 16. Which group of bacteria include those that cause syphilis? 17. Which group of prokaryotes was responsible for converting Earth's early atmosphere from anaerobic to aerobic? 18. Is the chlorophyll of cyanobacteria similar to that of plants? 19. What are thermoacidophiles? What type of environment do they prefer? 20. What is the difference between autotrophs and heterotrophs?
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On National Teacher Day, meet the 2024-25 Kenan Fellows
9- Looking at Figure 1 as a reference- to which period belong fossils.docx
1. 9. Looking at Figure 1 as a reference, to which period belong fossils 400 million years old? 100
million years old? 50 million years old? Figure 1: Geological timeline reference. 10. If the half-
life of a radioactive substance is 600 years, what fraction of the original material is left after
1,800 years? Chapter 19: Bacteria, Archaea, and Viruses 11. Which are the 3 domains of life?
12. What is the difference betweek prokaryotic and eukaryotic cells? 13. Are Archaea more
closely related to Bacteria, or to Eukarya? 1 14. Which group of living things has a cellular
membrane which contains Peptidoglycan? 15. What is lateral gene transfer? 16. Which group of
bacteria include those that cause syphilis? 17. Which group of prokaryotes was responsible for
converting Earth's early atmosphere from anaerobic to aerobic? 18. Is the chlorophyll of
cyanobacteria similar to that of plants? 19. What are thermoacidophiles? What type of
environment do they prefer? 20. What is the difference between autotrophs and heterotrophs?
