Chapter 2 An Overview Of Microbial Life
1. Describe the differences of prokaryotic and eukaryotic cells.
2. What is a micron (um)? What is the size of a typical bacteria?
3. Describe viruses. Are they alive?
4. Differentiate between nucleus and nucleoid.
5. How do plasmids differ from chromosomes?
6. Why do human cells contain more genes than a bacterial cell?
7. What three major groups can all living things are divided into?
8. How can these three domains be differentiated from each other and how are they
similar?
9. What molecular theory evidence supports the theory of endosymbiosis?
10. What are the three ways microorganisms obtain energy in nature? Explain.
11. How can you distinguish between phototrophs and chemotrophs by simply
looking at it under a microscope?
12. What are extremophiles?
13. What important bacterial species that resides in your gut is a member of the
Proteobacteria?
14. Why can it be said that the cyanobacteria prepared Earth for the evolution of
larger life forms?
15. What is unusual about the genus Halobacterium?
16. How do we know a particular lineage of prokaryote exists in a natural habitat
without first isolating and growing in a laboratory culture?
17. List at least two ways algae differ from cyanobacteria.
18. List at least two ways algae differ from protozoa.
19. How do the components of a lichen benefit each other?