Recommendations to follow:
1. Answers are thought to be short in most of the cases
2. Try as much as you can to connect the terms and understand the association between some of the concepts in order
to get the whole picture about the topic. Memorizing alone can give you probably around a 70/100 in the exam, but
some questions always require connecting two or more ideas to come up with a short and precise answer.
3. If you understand these review questions you should do fine in the test, questions in the test will variations of the
same themes covered in these questions.
Ch15_The Evolution of Microbial Life
1. In what types of ecosystems can prokaryotes live? Why are many Archaea called “extremophilesd”?
2. Explain all the differences between Prokaryotes and Eukaryotes
3. Explain the way most bacteria reproduce, called “binary fission”
4. What are “endospores”?
5. Understand the different forms of prokaryotic nutrition. Which ones are also present in eukaryotes?
6. Explain the reasons why bacteria are so successful. In other words, how do they manage to produce so
much genetic variability if they reproduce asexually?
7. Describe the different ecological roles of bacteria (decomposers, mutualists, pathogens, producers,
opportunistic pathogens) and the possible uses of bacteria by humans
8. Microorganisms are, by definition, microscopic. This means that we need a microscope in order to observe
them. Bacteria fit this definition perfectly!. What organisms inside the kingdom Protista can also be
considered microorganisms? Which ones are macroscopic and do not fit the definition of microorganisms?
9. Name the groups included in the kingdom Protista according to their “similarity” to plants, animals, or
fungi. Make a table and compare them considering: cellular organization (multicellular, unicellular),
nutritional mode (autotrophy, heterotrophy), motility, and presence of cell wall
10. What is phytoplankton?
a) Name the two main components of the unicellular algae, or phytoplankton!.
b) Which one is responsible of the phenomena known as “red tides”? Explain the general characteristics of
a red tide
11. The multicellular algae are classified based on the main pigments they carry. Give the general names of the
12. Algae are important because they constitute the autotrophic component of the oceans, so they contribute
with a great deal of the oxygen available on Earth. Why some multicellular red and brown algae are also
considered useful for humans? (explain their economic importance based on what is obtained from them)
13. What is a protozoan? Give two differences between a protozoan and an unicellular algae
14. Mention what protozoa caused malaria. Explain how the malaria is transmitted
15. Fungus-like protists are organisms that previously belonged to the kingdom fungi. What are the main
differences with real fungi that placed this group in a separate taxonomic category?
Instructor: Dr. Jose Bava