About This Chapter
Overview of Cells - Chapter Summary
In these lessons, our instructors cover topics related to cells, including cell theory, the differences between eukaryotic and prokaryotic cells and the process of photosynthesis. Additional lessons outline cytoplasm and mitochondria. Our mobile-friendly learning tools are available to you on your computer or mobile device for easy and convenient study. Utilize the multiple-choice quizzes to test your understanding or prepare for a test. Our printable quizzes make quick, easy study guides. In addition to detailing the topics mentioned above, this chapter is designed to help you:
- Describe the difference between animal and plant cells
- Explain the purpose of cellular respiration
- Detail the structure of the nucleus
- Detail how the cell membrane maintains homeostasis
1. What is Cell Theory? - Definition & Parts
Cell theory is a fundamental theory in biology that makes generalizations about cells. This lesson will help you understand the three main principles of cell theory.
2. Eukaryotic and Prokaryotic Cells: Similarities and Differences
In this lesson, we discuss the similarities and differences between the eukaryotic cells of your body and prokaryotic cells such as bacteria. Eukaryotes organize different functions within specialized membrane-bound compartments called organelles. These structures do not exist in prokaryotes.
3. The Difference Between Plant and Animal Cells
While both plant and animal cells are eukaryotic and share many similarities, they also differ in several ways. Learn about the key differences between these two cell types in this lesson.
4. Photosynthesis: Definition & Reactions
Some people may falsely assume plants to be weaker than animals. However, plants and a few other organisms harness light energy from the sun to feed the rest of us. This lesson will introduce you to how they do it.
5. What Is the Purpose of Cellular Respiration?
In this lesson, explore cellular respiration and its purpose. You'll see the differences between anabolic and catabolic reactions and understand how our bodies are able to utilize the energy stored in the foods we eat.
6. Structure of the Nucleus: Nucleolus, Nuclear Membrane, and Nuclear Pores
In this lesson, we'll discuss the organization and importance of the nucleus in your cells. This is the membrane-bound structure responsible for containing all the genetic material essential to making you who you are.
7. What is Cytoplasm? - Definition & Functions
Did you know your cells are filled with a thick fluid? Cytoplasm is an important part of your cells and serves several functions that are key to cellular health and productivity.
8. What Is Mitochondria? - Definition & Functions
What does a little thing inside of your cells have to do with bacteria, energy, money, and your body's life sustaining processes? Well, in one word, 'mitochondrion' is the answer! In this lesson, you will learn about mitochondria and their function.
9. How Does the Cell Membrane Maintain Homeostasis?
Maintenance of homeostasis is important to the survival of an organism. In this lesson, you will learn what mechanisms allow the cell membrane to play a major part in maintaining homeostasis for the cell and the organism.
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Other chapters within the 7th Grade Science: Life Science course