About This Chapter
Microbiology Overview - Chapter Summary
Begin your study of microbiology with a video lesson covering archaea, a domain consisting of single-celled prokaryotes, many of which tolerate extreme environments with high temperatures, high salt concentrations or a low pH. You can use additional lessons found in this chapter to learn about bacteria in general and cyanobacteria in particular. Find out how the bacterial species grouped in this phylum produce oxygen through photosynthesis, and discover why this process proved crucial to the evolution of life on Earth.
Additional lessons describe the characteristics of eukaryotic organisms, like flagellates, amoebas, ciliates, sporozoans and other forms of protozoa. Instructors also go over types of algae and highlight the differences between fungi such as mold, mushrooms and yeasts. A brief description of how these saprophytic or parasitic fungi reproduce is also included. By the end of this chapter, you should be familiar with the following topics:
- Definition of archaea
- Characteristics of bacteria
- Types of protozoa
- Examples of algae
- Fungi types
Our online lessons are taught by knowledgeable educators. The chapter on microbiology features a handful of video presentations, each of which is complemented by a self-assessment quiz. These resources' unique features - such as video tags, lesson transcripts and links to corresponding text lessons - can be used to assess your level of proficiency or review topics covered in your own microbiology course.
1. Archaea: Definition, Characteristics & Examples
There is an entire domain of life that is made up of single-celled organisms without nuclei. We're not referring to the Bacteria domain, however. In this lesson, we will examine the main characteristics of the least commonly known domain, the Archaea.
2. What is Bacteria? - Definition, Characteristics & Examples
This lesson will introduce the Bacteria, a large and diverse group of microorganisms. We will examine several key characteristics, as well as a few commonly known examples of bacterial species.
3. Cyanobacteria: Definition, Characteristics & Species
Cyanobacteria are a phylum of Bacteria that produce oxygen during photosynthesis. This lesson will examine cyanobacteria and the role they played in establishing our oxygen-rich atmosphere.
4. What are Protozoa? - Definition, Characteristics & Examples
Taxonomy is the realm of science that attempts to group similar organisms together, which is not always an easy task. In this lesson, we will examine the protozoa, a diverse group of organisms that didn't really fit anywhere else.
5. What is Algae? - Definition, Characteristics & Examples
Plants are not the only organisms capable of carrying out photosynthesis. In this lesson we will look at algae and how an algal species can be differentiated from other organisms and microbes.
6. What are Fungi? - Types and Characteristics
In this lesson, we will examine the group of organisms known as the fungi. This group includes the familiar organisms mushrooms, yeasts and molds. We will look at several major characteristics of fungi, as well as a few disease-causing fungi.
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