About This Chapter
NJBCT: Cell Biology - Chapter Summary
This chapter includes video lessons designed to give an overview of cellular function while also going in-depth on several processes and components of the cell. Preparing in this way will help you make sure you're ready for any of the various questions related to cell biology that you may encounter on the NJBCT. By the end of this chapter, you'll have bolstered your knowledge of:
- The structure and function of the cell
- Cell transduction
- Phospholipid bilayers
- The fluid mosaic model
- Passive and active transport
- Endocytosis and exocytosis
Each lesson includes a self-assessment quiz at the end so you can familiarize yourself with the types of questions you may encounter on the exam and ensure your ability to be ready for them. Taught by professional instructors, each video lesson also includes a transcript if you prefer to learn through reading, and each video allows you to skip ahead or go back to key points so that you can focus on the topics you most need to study.
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. Transduction in Cells
Once a cellular signal is received, a chain of events begins that helps the receiving cell decode the signal. In this video lesson you will learn about this second step of cellular communication and its importance to the overall process.
3. 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?
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. Passive Transport in Cells: Simple and Facilitated Diffusion & Osmosis
A cell membrane is selectively permeable - not permeable to everything. In this lesson, we'll talk about methods of passive transport along a concentration gradient, including simple and facilitated diffusion and osmosis.
6. Active Transport in Cells: Definition & Examples
In this lesson, we'll learn how substances are transported across the cell membrane against the concentration gradient. This might seem like an uphill battle for the cell, but all it takes is a little chemical energy and a few integral membrane proteins to kick off some active transport!
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.
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Other chapters within the NJBCT: Study Guide & Practice course
- NJBCT: Organic Biochemistry
- NJBCT: Understanding Enzymes
- NJBCT: Molecular Biology
- NJBCT: Multicellular Organisms
- NJBCT: Matter & Energy Transformations
- NJBCT: Understanding Ecosystems
- NJBCT: Genetics & Heredity
- NJBCT: Evolution & Diversity
- NJBCT: Scientific Method & Inquiry
- NJBCT: Using Math for Research
- NJBCT: Safety & Standards in the Lab
- NJBCT: Cooperative Scientific Learning
- NJBCT Flashcards