About This Chapter
Cell Structure and Function - Chapter Summary and Learning Objectives
Study cell structure inside and out with these animated video lessons and multiple-choice quizzes. Instructors discuss the unique properties of the cell membrane as well as the processes involved in transporting substances in and out of the cell. You can also take a look at the organelles taking part in DNA replication, energy production and many other functions vital to the health of living organisms. Topics of instruction include:
- Cell membrane structure
- Functions of cell organelles
- Active and passive cell transport
- Cell growth and division
|The Cell: Structure & Function||Get a brief overview of the cell's plasma membrane, nucleus and cytoplasm. Explore functions of the mitochondria, endoplasmic reticulum, ribosomes and Golgi apparatus.|
|Plasma Membrane of a Cell: Definition, Function & Structure||Take a closer look at the components of a cell membrane's phosopholipid bilayer.|
|What Is Cytoplasm? - Definition, Functions & Quiz||Explore the role of cytoplasm in cellular respiration, cell division and polypeptide synthesis.|
|How a Phospholipid Bilayer Is Both Hydrophobic and Hydrophilic||Learn how a cell's phospholipid bilayer maintains the boundary between its external and internal environments.|
|The Fluid Mosaic Model of the Cell Membrane||Examine the cholesterol molecules, proteins and carbohydrates embedded in the phospholipid bilayer.|
|Passive Transport in Cells: Simple and Facilitated Diffusion & Osmosis||Explore the role of concentration gradients and membrane proteins in these forms of passive transport.|
|Active Transport in Cells: Definition & Examples||Learn how uniports, antiports and symports move molecules in and out of a cell.|
|Endocytosis and Exocytosis Across the Cell Membrane||Explore the three different kinds of endocytosis and examine the functions of exocytosis.|
|Protein Synthesis in Cells: Process & Importance||Take a look at the processes involved in protein transcription and translation.|
|The Cell Cycle||Trace the stages of cell growth and division, such as interphase, mitosis and cytokinesis.|
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. Plasma Membrane of a Cell: Definition, Function & Structure
Cells are made of many crucial parts that work together and perform specific functions. In this lesson, you will learn about the plasma membrane of a cell to gain an understanding of its structure and function.
3. 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.
4. 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?
5. 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.
6. 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.
7. 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!
8. 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.
9. Protein Synthesis in Cells: Process & Importance
The DNA of the cell contains the blueprints for all the proteins in the body. These blueprints become proteins with the help of RNA and ribosomes. Follow along with this lesson to learn about the two major phases of protein synthesis: transcription and translation.
10. The Cell Cycle: Definition, Phases & Sequence
Learn about the dividing and non-dividing states of the cell and discover the different phases of the cell cycle, including interphase, cytokinesis, and the stages of cell division.
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Other chapters within the UExcel Anatomy and Physiology I: Study Guide & Test Prep course
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- Basics of the Atom
- Chemical Bonds
- Types of Reactions
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- Organic Compounds
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- Spinal Cord and Nerves
- The Brain and Cranial Nerves
- Sensory Nerves and Pathways
- The Human Body's Five Senses
- The Endocrine System
- Other Human Secretion Systems
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