About This Chapter
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.
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.
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!
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.
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.
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?
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.
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.
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.
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!
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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Other chapters within the TExES Life Science 7-12: Practice and Study Guide course
- TExES Life Science: Overview of the Field
- TExES Life Science: Scientific Inquiry
- TExES Life Science: Lab Equipment, Processes & Safety
- TExES Life Science: Matter & Atomic Structure
- TExES Life Science: Prokaryotic Cells
- TExES Life Science: Cell Communication
- TExES Life Science: Inorganic Chemistry
- TExES Life Science: Organic Compounds
- TExES Life Science: Nucleic Acids
- TExES Life Science: Enzymes
- TExES Life Science: Protists, Fungi & Viruses
- TExES Life Science: Metabolic Biochemistry
- TExES Life Science: DNA Replication
- TExES Life Science: DNA Transcription & Translation
- TExES Life Science: Cell Cycle & Division
- TExES Life Science: Genetics & Heredity
- TExES Life Science: Genetic Mutations
- TExES Life Science: Biological Evolution
- TExES Life Science: Taxonomy & the Diversity of Life
- TExES Life Science: Plant Cells
- TExES Life Science: Plant Biology
- TExES Life Science: Plant Reproduction & Growth
- TExES Life Science: Animals
- TExES Life Science: Human Body Systems
- TExES Life Science: Human Reproduction & Development
- TExES Life Science: Homeostasis of Organisms
- TExES Life Science: Biology & Behavior
- TExES Life Science: Interdependence of Life & Environmental Systems
- Learning & Instruction for the Science Classroom