About This Chapter
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- Identify which concepts are covered on your cell biology homework.
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Topics from your homework you'll be able to complete:
- The fluid mosaic model of the cell membrane
- Passive and active transport in cells
- Endocytosis and exocytosis across the cell membrane
- The nucleolus, nuclear membrane and nuclear pores
- The ribosome's structure, function and location
- Components of the endomembrane system
- The cytoskeleton's microtubules and microfilaments
- Mitochondria cristae, matrix and membranes
- Chloroplast structure and function
- Plant cell walls and central vacuoles
- Differences between eukaryotic and prokaryotic cells
- Viruses' lytic and lysogenic cycles
1. 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?
2. 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.
3. 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.
4. 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!
5. 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.
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. 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.
8. 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!
9. 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.
10. 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!
11. Chloroplast Structure: Chlorophyll, Stroma, Thylakoid, and Grana
In this lesson, we'll explore the parts of the chloroplast, such as the thylakoids and stroma, that make a chloroplast the perfect place for conducting photosynthesis in plant cells.
12. Plant Cell Structures: The Cell Wall and Central Vacuole
In this lesson, we'll talk about some of the things that make plant cells so different from our cells. In addition to being mean, green photosynthesizing machines, plant cells have cell walls and central vacuoles to make them unique!
13. 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.
14. Viruses: Bacteriophage Lytic and Lysogenic Cycles
Viruses are generally not only our enemy but also the enemy of many other organisms. Bacteriophages are viruses that infect specific bacteria. In this lesson, we'll discuss their basic structure and infection cycle.
15. Cytosol: Definition, Function & Structure
The cell is the basic unit of life and contains multiple organelles in order to function. One of the key components that supports these organelles is the cytosol. This article discusses cytosol, its functions, and its structure.
16. Intracellular: Definition & Structures
The inside of a cell is more than just a place for parts that hold plants and animals together. The life of everything on the planet depends on the chemical exchanges and the tiny structures that go about their work twenty four hours a day.
17. Lysozyme: Definition, Function & Structure
Explore what makes the lysozyme enzyme a powerful antibacterial agent. Learn about lysozyme's intriguing discovery and how it works to protect our body from harm.
18. Microvilli: Definition & Function
There are many small structures that help cells and organs work properly. One of these structures are the microvilli. Learn about what these tiny structures do, and find out where they are located.
19. What is a Stem Cell? - Definition, Uses & Research Facts
Stem cells are able to repair and replace damaged tissues and organs, and research on the use of these remarkable cells to treat many otherwise incurable conditions is ongoing. In this lesson, we'll learn what stem cells are and how they are being used in medicine.
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