Chapter 24 Outline

Viruses and Kingdom Prokaryotae

The diversity of viruses and prokaryotes, as well as their structure and mechanism of reproduction are explained.

Chapter Outline

In this chapter outline, the learning objectives and the selected key terms are given for each major head in the chapter.

Viruses Are Particles (p. 396)

1. Contrast the characteristics of viruses and bacteria to show that viruses are

nonliving and bacteria are living organisms.

2. Describe the structure of viruses and how they replicate.

3. Describe how bacteriophages and animal viruses, including retroviruses,

reproduce.

4. Discuss how viral infections can be controlled and how antiviral drugs work.

Selected Key Terms: virus, bacteriophage, lytic cycle, lysogenic cycle, retrovirus,

vaccine

Prokaryotes Are Cellular (p. 401)

5. Describe the structure of a prokaryotic cell.

6. Describe how bacteria reproduce, how variations are generated, and how genetic

recombination occurs.

7. Explain how bacteria differ in their tolerance and need for oxygen.

8. List the different types of autotrophic bacteria, and specifically explain why some

photosynthesizers give off oxygen and others do not.

9. Describe the nutrition of most heterotrophic bacteria, and give examples of

different types of symbiotic bacteria.

kingdom Prokaryotae, bacteria, binary fission, endospore, chemosynthesis,

saprotroph, decomposer, symbiotic, nitrogen fixation

How Prokaryotes Are Classified (p. 405)

10. Describe the two subkingdoms of kingdom Prokaryotae and describe the

common criteria used to divide eubacteria into groups.

11. Describe the anatomy and physiology of the cyanobacteria and discuss their

historical significance.

12. Discuss how bacterial infections can be controlled and how antibiotics

work.

archaebacteria, eubacteria, cyanobacteria, lichen, antibiotic

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