About This Chapter
Who's it for?
Anyone who needs help learning or mastering high school biology material will benefit from taking this course. There is no faster or easier way to learn biology. Among those who would benefit are:
- Students who have fallen behind in understanding cell types and cell biology
- Students who struggle with learning disabilities or learning differences, including autism and ADHD
- Students who prefer multiple ways of learning science (visual or auditory)
- Students who have missed class time and need to catch up
- Students who need an efficient way to learn about cell biology
- Students who struggle to understand their teachers
- Students who attend schools without extra science learning resources
How it works:
- Find videos in our course that cover what you need to learn or review.
- Press play and watch the video lesson.
- Refer to the video transcripts to reinforce your learning.
- Test your understanding of each lesson with short quizzes.
- Verify you're ready by completing the cell biology chapter exam.
Why it works:
- Study Efficiently: Skip what you know, review what you don't.
- Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
- Be Ready on Test Day: Use the cell biology chapter exam to be prepared.
- Get Extra Support: Ask our subject-matter experts any cell biology question. They're here to help!
- Study With Flexibility: Watch videos on any web-ready device.
Students will review:
This chapter helps students review the concepts in a cell biology unit of a standard high school biology course. Topics covered include:
- Active and passive transport in cells
- Endocytosis and exocytosis across cell membranes
- Eukaryotic and prokaryotic cells
- Plant cells
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. Kingdom Protista: Definition, Characteristics & Examples
Learn about the requirements to enter Kingdom Protista, one of the five kingdoms of life. Discover and read about the organisms that can be found there.
15. 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.
16. Glycocalyx: Definition & Function
This lesson is about the glycocalyx, which is an important outer covering of all kinds of cells, from humans to bacteria. In this lesson, you'll learn what does in our bodies and for bacteria. We'll also cover medical applications of the glycocalyx.
17. Homologous Chromosomes: Definition, Pairing & Separation
This lesson explains the concept of homologous chromosomes. It includes key vocabulary, illustrations, and explanations. It also addresses the process of chromosome separation. A brief quiz is also included.
18. Immune Cells: Types & Explanation
The immune system is extremely complex. This lesson includes a rundown of the basic immune cells and what they do. There is a quiz at the end if you are feeling brave.
19. Receptor: Definition & Function
In this lesson, we'll use football to learn about cellular receptors in biology and how they work. We'll find out what receptors are, where we can find them, and why they're so important to the human body.
20. What Are Blood Cells? - Functions & Types
There are three different types of blood cells circulating through the bloodstream. Learn about the function of each of the three types of blood cells, and test your knowledge by taking the quiz.
21. Do Plant Cells Have a Cell Membrane?
What are cell membranes and what do they do? Do plant cells have them, or do they just contain cell walls? This lesson answers those questions through an investigation into cell membranes, then you can test your knowledge with a short quiz.
22. Cell Membrane Diseases: Types & Causes
Cell membrane diseases often result in materials not being able to properly pass through cells. This lesson will discuss how different dysfunctions of the cell membrane can cause disease in a person.
23. Transport Across the Cell Membrane
This lesson is on transport across the cell membrane. In this lesson, we'll review what a cell membrane is and what it's made of, and learn in detail about the three types of transport across the membrane.
24. What Does the Cell Membrane Do in a Plant Cell?
Plant cells are surrounded by a cell membrane and a cell wall. But why have a membrane if you have a wall? This lesson addresses that question through an investigation into plant cell membrane function.
25. What Does the Nucleus Do in a Plant Cell?
In this lesson, we'll review the structure of the nucleus, its main functions of storing and copying DNA, and what it does specifically in plant cells. After completing the lesson, check your understanding with a quick quiz.
26. What is a Cell Membrane? - Definition, Location & Facts
In this lesson, we'll discuss what a cell membrane is and its location. We'll also examine the cell membrane's functions, its components and structure, and its characteristics.
27. What Is the Function of Cholesterol in the Cell Membrane?
This lesson looks at the details of the cell membrane. It focuses on the structure of the membrane and cholesterol's role in maintaining a healthy, strong cell membrane.
28. What Is the Function of the Nucleus in Eukaryotic Cells?
In this lesson, we'll learn what a eukaryotic cell is and what a nucleus is. We'll also cover what the nucleus does in these cells and why it's important.
29. Where Is the Nucleus Located in a Cell?
A cell is a complex microscopic structure constantly working to keep organisms alive. Many cells are full of organelles such as the nucleus. Where can we find this important organelle? Learn more about its location in this lesson.
30. Who Discovered the Cell Membrane?
The modern concept of a cell membrane is drawn from a long history of the science of cell membranes. This lesson explores how our idea of a membrane surrounding a cell has changed over history, as well as our current understanding of how it functions.
31. Why Does Water Pass Quickly Through the Cell Membrane?
Cells have a membrane that helps keep the inside and outside separate. Water moves in and out of the cell so the concentration is equal on both sides. To prevent too much movement, the human body controls water levels in the blood.
32. Why Is Cell Division Important?
This lesson is on the importance of cell division. In this lesson, we'll go over what cell division is in different types of cells and examples of the importance of it.
33. Why Is the Cell Membrane Important?
What are cell membranes and why do cells have them? Better yet, are they even important? This lesson answers those questions through an investigation into the cell membrane and its function.
34. Why Is the Cell Membrane Selectively Permeable?
This lesson is on the cell membrane and selective permeability. In this lesson, we'll learn what is a cell membrane, what it means to be selectively permeable, and why the cell membrane is selectively permeable.
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- Genetic Mutations in Biology: Help and Review
- DNA Technology and Genomics: Help and Review
- Bacterial Biology Essentials: Help and Review
- Viruses in Biology: Help and Review
- The Origin of the Universe and Life on Earth: Help and Review
- Geologic Time, Dating & Fossils: Help and Review
- Evolution Basics: Help and Review
- The Evolution & Classification of Organisms: Help and Review
- Basics of Plant Biology: Help and Review
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- Introduction to Fungi: Help and Review
- Introduction to Invertebrates: Help and Review
- Introduction to Vertebrates: Help and Review
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- The Nervous, Immune, and Endocrine Systems: Help and Review
- Animal Reproduction & Embryonic Development: Help and Review
- Human Reproductive Systems: Help and Review
- Ecology and the Environment: Help and Review
- Human Effects on the Environment: Help and Review
- Animal Behavior: Help and Review
- Laboratory Techniques for Molecular Biology & Genetic Engineering: Help and Review
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