About This Chapter
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
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.
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.
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.
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.
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.
Earning College Credit
Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.
To learn more, visit our Earning Credit Page
Transferring credit to the school of your choice
Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.
Other chapters within the 7th Grade Science: Life Science course