Ch 1: Introduction to Living Things

About This Chapter

Find out important facts about living things by studying the lessons in this chapter. These lessons can help you get better grades in class, get ready for a science test or learn more to satisfy your curiosity.

Introduction to Living Things - Chapter Summary

The lessons in this chapter focus on key aspects of living things. You can learn about their defining characteristics, what life cycles are, what metamorphosis is and much more.

Each of these brief lessons is designed to help you learn quickly by holding your interest and keeping you actively engaged. Our expert instructors and subject-matter specialists are here to help if you have questions, while the lesson quizzes and chapter exams let you test yourself on what you've learned. When you're finished, you should be able to:

  • Identify and explain the characteristics of living organisms
  • Give the definition and list the stages of a life cycle
  • Explain what metamorphosis is and how it works
  • Describe how an organism could respond to an external stimulus
  • Discuss and define homeostasis

5 Lessons in Chapter 1: Introduction to Living Things
Test your knowledge with a 30-question chapter practice test
The Defining Characteristics of Living Organisms

1. The Defining Characteristics of Living Organisms

A house is not a living thing, but the people, animals, and plants living inside it are. So how do we define 'life'? Learn about seven characteristics that all living organisms have in common, no matter how different they may look on the outside.

What is a Life Cycle? - Definition, Stages & Examples

2. What is a Life Cycle? - Definition, Stages & Examples

In this lesson, you'll learn the definition of 'life cycle' and find out about the three basic stages of a life cycle. You'll also explore examples of different life cycles.

Metamorphosis: Definition & Process

3. Metamorphosis: Definition & Process

This lesson addresses the concept of metamorphosis. It explains why some juvenile organisms look very different than their adult counterparts. The lesson also distinguishes between the different types of metamorphosis.

Predicting How Organisms Will Respond to External Stimuli

4. Predicting How Organisms Will Respond to External Stimuli

Reacting to stimuli is one of the requirements for something to be considered 'alive'. This lesson will explain what a stimulus is, and how an organism might react to some possible stimuli.

What Is Homeostasis? - Definition & Examples

5. What Is Homeostasis? - Definition & Examples

Homeostasis can be defined as a property of an organism or system that helps it maintain its parameters within a normal range of values. It is key to life, and failures in homeostasis can lead to diseases like hypertension and diabetes.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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