Khan Academy
Khan Academy: Exocytosis
Video lesson provides an introduction to exocytosis, how the cell transports molecules (such as proteins) out of the cell. [4:16]
Khan Academy
Khan Academy: Biology: Secondary Active Transport in the Nephron
A detailed account of what occurs inside the nephron, allowing ions to be transported out of the lumen. [14:13]
Sophia Learning
Sophia: Cell Transport
A narrated tutorial describing the three different kinds of cellular transport: diffusion, osmosis, and facilitated diffusion. Includes descriptive illustrations, analogies, and examples. [13:28]
Howard Hughes Medical Institute
Hhmi: Bio Interactive: Diffusion Across Membranes
Resource offers a great explanation and animation of the processes of active and passive transport across cell membranes.
Sophia Learning
Sophia: Endocytosis and Exocytosis: Lesson 2
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."
Khan Academy
Khan Academy: Energy and Transport: Diffusion Introduction
Learn about how particles move from an area of greater concentration to an area of lesser concentration through the process of diffusion. [6:06]
Khan Academy
Khan Academy: Sodium Potassium Pump
This video explains how the sodium-potassium (Na+/K+) pump works and its role in establishing resting membrane potentials. [7:18]
Khan Academy
Khan Academy: Uniporters, Symporters and Antiporters
Uniporters, symporters, and antiporters are proteins that are used in the transport of substances across a cell membrane. This video describes how each of these works in the transport process. [7:13]
Sophia Learning
Sophia: Active Transport: Lesson 3
This lesson introduces the process of active transport, explaining that it is a form of transport that requires energy, and moves molecules against their concentration gradient. It is 3 of 4 in the series titled "Active Transport."
Bozeman Science
Bozeman Science: Transport Across Cell Membranes
Paul Andersen describes how cells move materials across the cell membrane. All movement can be classified as passive or active. Passive transport, like diffusion, requires no energy as particles move along their gradient. Active...