Khan Academy
Khan Academy: Gas Exchange: Fick's Law of Diffusion
Learn all of the different ways to maximize the amount of particles that diffuse over a short distance over time.
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.
Science for Kids
Science Kids: Experiment Videos: Diffusion of Food Coloring
A brief video explains and illustrates the process of diffusion. [0:39]
Sophia Learning
Sophia: Diffusion: Lesson 5
This lesson will explain how substances move across a cell membrane through the process of diffusion as well as discuss why this process is important in our bodies. It is 5 of 8 in the series titled "Diffusion."
Bozeman Science
Bozeman Science: Specular Reflection
In the following video Paul Andersen explains how light that is perfectly reflected creates specular reflection. The angle of the incident ray is equal to the angle of the reflected ray. Specular reflection is also known as mirror-like...
Crash Course
Crash Course A&p #31: Respiratory System, Part 1
So we all know that breathing is pretty important, right? Today we're going to talk about how it works, starting with the nameless evolutionary ancestor that we inherited this from, and continuing to the mechanics of both simple...
Khan Academy
Khan Academy: Gas Exchange: Graham's Law of Diffusion
Find out whether oxygen or carbon dioxide has a higher rate of diffusion in this video lecture. Lecture discusses the euqation to find out how to relate diffusion of gases to their molar masses. [8:56]
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.