Sophia Learning
Sophia: Cell Membrane Transport Processes Diffusion
A narrated, video tutorial illustrating how diffusion works. It shows the concentration gradient that diffusion follows, explains the difference between diffusion and facilitated diffusion, and presents real life examples. [7:46]
Khan Academy
Khan Academy: Energy and Transport: Concentration Gradients
A concentration gradient occurs when the concentration of particles is higher in one area than another. In passive transport, particles will diffuse down a concentration gradient, from areas of higher concentration to areas of lower...
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: 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: Diffusion: Lesson 3
This lesson explains the process of diffusion. It explains how diffusion is a passive form of transport, used to move molecules down their concentration gradient. It is 3 of 8 in the series titled "Diffusion."
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...
Bozeman Science
Bozeman Science: Ap Biology Lab 1 Diffusion & Osmosis
Paul Andersen starts with a brief description of diffusion and osmosis. He then describes the diffusion demonstration and how molecules move over time. He then explains the concepts behind the osmosis lab and how potatoes are affected by...
Bozeman Science
Bozeman Science: Ap Biology Labs Part 1
Paul Andersen details the first 7 of 13 labs in the AP Biology Curriculum. The following topics are all covered: Artificial Selection, Hardy-Weinberg Equilibrium, Comparing DNA using BLAST, Diffusion and Osmosis, Photosynthesis,...
Bozeman Science
Bozeman Science: Diffusion Demo
Mr. Andersen talks you through the diffusion demo. After you finish watching this video you should be able to rank the following from smallest to largest: starch, glucose, water, IKI and the pores in the dialysis tubing.