Extensive biology course material on cell structure and function, that is enriched with videos and images to demonstrate the processes being explained.

Learn all about the complex components of the cell membrane in this video lecture. Understand how the components of the phospholipid bilayer allows the cell membrane to be modeled by a fluid mosaic model. [8:47]

Learn about the transport of molecules across the cell membrane in this video. Video discusses passive transport, like diffusion, across a selectively permeable membrane. [6:59]

Video lesson focuses on the structure of plant cell walls. [7:42]

Learn about how phospholipids form the cell membrane, and what types of molecules can passively diffuse through the membrane. [8:52]

This Khan Academy tutorial will enrich study on the different types of proteins that exist on the cell membrane. [8:11]

A tutorial about the function of the cell membrane as a selective barrier that moves material into and out of the cell to maintain homeostasis.

Find out why a cell that is permeable to multiple ions has a membrane potential that is influenced by the ion with the highest permeability. Rishi is a pediatric infectious disease physician and works at Khan Academy.

A narrated tutorial describing the three different kinds of cellular transport: diffusion, osmosis, and facilitated diffusion. Includes descriptive illustrations, analogies, and examples. [13:28]

Students focus on the bioengineering problem of meeting the basic needs of an organism as they imagine, plan, create, test, and improve their own model membrane. This is Part 2. It shows the lesson being conducted in a Grade 4 classroom...

Students focus on the bioengineering problem of meeting the basic needs of an organism as they imagine, plan, create, test, and improve their own model membrane. This is Part 1. It shows the lesson being conducted in a Grade 4 classroom...

Learn how different compounds are able to move across the cell membrane to get where they need to go. [11:50]

Students focus on the bioengineering problem of meeting the basic needs of an organism as they imagine, plan, create, test, and improve their own model membrane.

Students explore properties of natural membranes and test the performance of several model membrane materials. [19:02]

Students explore properties of natural membranes and test the performance of several model membrane materials. [19:18]

A storybook introduces the engineering challenge and context. In this story, Juan Daniel, a boy from El Salvador, learns about bioengineering as he designs his own model membrane. [14:31]

Students explore properties of natural membranes and test the performance of several model membrane materials. [19:33]

Students explore properties of natural membranes and test the performance of several model membrane materials. [18:52]

A storybook introduces the engineering challenge and context. In this story, Juan Daniel, a boy from El Salvador, learns about bioengineering as he designs his own model membrane. [18:27]

This lesson introduces the processes of endocytosis and exocytosis, both processes which move larger molecules in and out of the cell, by way of vacuoles. It is 2 of 4 in the series titled "Endocytosis and Exocytosis."

A video explaining why homeostasis is necessary and how the cell membrane controls the cell's homeostasis. Teachers can visit Amoeba Sisters' website for a handout that goes along with video. [4:12]

Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane. [11:44]

Find out how a cell that is permeable to one ion can become charged (either positive or negative) if there is permeability and a concentration gradient in this video lecture. Also discussed is an equation to calculate the membrane...

Discover in detail, the structure and function of the cellular membrane. [5:56]