BIOL 1111 Chapter Notes - Chapter 22: Facultative Anaerobic Organism, Gram Staining, Obligate Anaerobe
Summary Questions for Chapter 22 – Bacteria and Archaea
1. Which two domains encompass all prokaryotes?
2. What are the three common shapes of prokaryotes?
3. Describe the basic structure of prokaryotes.
4. How is a prokaryotic genome different from a eukaryotic genome?
5. What are plasmids and how can they contribute to genetic variation in prokaryotes?
6. Describe the difference between a bacterial ribosome from an archael ribosome.
7. Describe the composition of a bacterial cell wall.
8. How does penicillin work to kill bacteria cells?
9. What is the difference between gram positive and gram negative bacteria?
10. Why is penicillin not as effective in killing gram negative bacteria?
11. What is a capsule and why do some bacterial cells have one?
12. What is the difference between a flagella and pili?
13. How does a sex pili increase genetic variability in bacterial cells?
14. What are the two mechanisms for obtaining carbon?
15. What are the two mechanisms for obtaining energy?
16. What is the difference between an obligate aerobe, an obligate anaerobe, and a facultative anaerobe?
17. How do bacterial cells contribute to nitrogen cycles?
18. What is the difference between nitrogen fixation and nitrification?
19. How do bacterial cells reproduce? What is the outcome of this process?
20. What is the difference between an exotoxin and an endotoxin?
21. How can bacterial cells become resistant to antibiotics?
22. What is a biofilm and why are they so resistant to antibiotics?
23. What is quorum sensing?
24. How is a biofilm formed?
25. Of the two domains, bacteria or archaea, which is more evolutionarily related to humans?
26. Compare the six most important evolutionary branches of bacteria with respect to their metabolism, gram
staining and unique features.
27. What are the unique features of archaea?
28. Compare the three evolutionary branches of archaea.
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