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Ch 5: TExES Life Science: Cell Biology

About This Chapter

Our video lessons and quizzes on cell biology are a great way to prepare yourself for questions about cells on the TExES Life Science exam. Let us help you prepare to ace this test!

TExES Life Science: Cell Biology - Chapter Summary

Cell biology is a key part of life science. Whether you need a refresher on the subject or you just want to prove to yourself you're ready for the TExES Life Science test, our chapter on cell biology can help you either way. Our instructors are science experts who, like you, love to teach. They have created video lessons that you can watch anytime and anywhere, including on your mobile device, so you can fit them in throughout your busy day. Even though they are brief, they thoroughly review key cell biology topics, including:

  • Cell structure and function
  • Structure and function of organelles such as mitochondria, ribosomes and the nucleus
  • The fluid mosaic model
  • The key features and roles of the phospholipid bilayer, endomembrane system and cytoskeleton
  • Active and passive cellular transport including endocytosis and exocytosis

Take the quiz following each lesson to determine whether you need to spend more time on the subject or are ready to move on to the next lesson. Contact our instructors if you need any assistance.

TExES Life Science: Cell Biology - Chapter Objectives

The state of Texas requires passing the TExES Life Science test as part of the certification process for this subject area. The test is computer-administered, and includes 100 multiple-choice questions that you'll have about 5 hours to complete. The test is subdivided into 6 domains.

The second domain is called Cell Structure and Processes and will assess, among other topics, your understanding of the basic components of eukaryotic cells (cell membrane, cell wall, ribosome, nucleus, mitochondrion) and their function and relationships to one another, as well as the transport processes used by cells. We strive to correlate our lesson topics with test objectives to give you a thorough review of the topics you'll need to know to pass the test.

10 Lessons in Chapter 5: TExES Life Science: Cell Biology
The Cell: Structure & Function

1. The Cell: Structure & Function

The cell is a small, but complex structure. Take a look inside the outer plasma membrane of a cell and discover the functions of some common cellular components, including the nucleus, endoplasmic reticulum, Golgi apparatus and mitochondria, in this lesson.

Mitochondria Structure: Cristae, Matrix and Inner & Outer Membrane

2. Mitochondria Structure: Cristae, Matrix and Inner & Outer Membrane

If you want to make it through the day, you're going to need some energy. In this lesson, we'll learn about the organelle that supplies this energy, the mitochondrion, and why this cell structure appreciates the time you took to eat breakfast this morning!

Structure of the Nucleus: Nucleolus, Nuclear Membrane, and Nuclear Pores

3. 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.

The Fluid Mosaic Model of the Cell Membrane

4. The Fluid Mosaic Model of the Cell Membrane

In this lesson, we will discuss the components of the cell membrane and why the fluid mosaic model paints the best picture of its structure. We'll learn about the roles of the phospholipid bilayer, cholesterol, proteins and carbohydrates.

How a Phospholipid Bilayer Is Both Hydrophobic and Hydrophilic

5. How a Phospholipid Bilayer Is Both Hydrophobic and Hydrophilic

In this lesson, we will learn what gives phospholipids a dual personality. How can this molecule be both hydrophobic and hydrophilic, and why is this important to a cell?

Active & Passive Transport in Cells

6. Active & Passive Transport in Cells

Every second of every day, your cells are restocked with vital nutrients while getting rid of waste products. How does all this go on, you ask? Find out in this lesson on active and passive transport in cells.

Endocytosis and Exocytosis Across the Cell Membrane

7. Endocytosis and Exocytosis Across the Cell Membrane

In this lesson, we'll discover how some cells can eat, drink, and digest their dinner through the process of endocytosis and a structure called the lysosome. In addition, we'll learn how a cell can throw out the leftovers across the cell membrane during exocytosis.

The Ribosome: Structure, Function and Location

8. The Ribosome: Structure, Function and Location

The ribosome is the cellular structure responsible for decoding your DNA. In this lesson, we'll learn about ribosome structure, function and location - characteristics that make it a very good genetic translator.

The Endomembrane System: Functions & Components

9. The Endomembrane System: Functions & Components

In this lesson, we'll learn about the endomembrane system, which consists of the endoplasmic reticulum and the Golgi apparatus. This system is important in making, packaging, and shipping all sorts of goodies for the cell to use!

The Cytoskeleton: Microtubules and Microfilaments

10. The Cytoskeleton: Microtubules and Microfilaments

In this lesson, we'll learn about the cytoskeleton of your cells. This network of microtubules, intermediate filaments, and microfilaments helps different types of cells maintain a unique set of characteristics, including shape and movement.

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