Ch 3: Unicellular & Multicellular Organism Overview

About This Chapter

Check out this chapter on unicellular and multicellular organisms for a high-level overview of bacteria, protists, mold and more. This collection of short lessons and quizzes is a perfect option for students who need extra homework help or an effective test prep resource.

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

5 Lessons in Chapter 3: Unicellular & Multicellular Organism Overview
Test your knowledge with a 30-question chapter practice test
Life Processes: Cellular vs. Organism Level

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.

Unicellular Organisms: Definition & Examples

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.

What is Bacteria? - Definition, Characteristics & Examples

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.

Examples of Unicellular Protists

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!

Multicellular Organism: Examples & Definition

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.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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