About This Chapter
Unicellular & Multicellular Organism Overview - Chapter Summary
Take a look at this convenient life science chapter to study the basics of unicellular and multicellular organisms. You'll compare these two organism types and examine the characteristics of bacteria and unicellular protists. You can work through the chapter at your own pace and use any computer or mobile device to access it. Check your understanding of the material by taking the included self-assessment quizzes and chapter exam. Our expert science instructors are also available to answer any questions you may have. By the end of the chapter, you should be equipped to:
- Recognize life processes at cellular and organism levels
- Define and compare unicellular and multicellular organisms
- Understand the characteristics of bacteria
- Recognize examples of unicellular protists
1. Life Processes: Cellular vs. Organism Level
Living things are made of cells. How does a cell's life compare with a whole organism's life? This lesson will compare and contrast cells and whole organisms, and how these two different levels meet the requirements of being alive.
2. Unicellular Organisms: Definition & Examples
Life takes a great variety of forms. This world is home to many simple organisms that live in a variety of environments. In this lesson, we will examine unicellular organisms to gain a better understanding of them.
3. 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.
4. Examples of Unicellular Protists
Protists are a diverse group of eukaryotic organisms that usually live in aquatic environments. This lesson describes unicellular protists - entire organisms that are just a single cell!
5. Multicellular Organism: Examples & Definition
Most organisms consist of only one cell and are invisible to the naked eye. Others, such as the rabbit, the bread mold and the pine tree, are made of many cells. Learn how to classify the multi-cellular organisms that inhabit our world.
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