An introduction to what cancer is and how it is the by-product of broken DNA replication.
Introduction to the capacitance of a two-plate capacitor. Created by Sal Khan.
How capillary action and the meniscus are related to intermolecular forces in water.
An introduction to the book Capital by Thomas Piketty. Created by Sal Khan.
Introduction to carbon 14 and using it to date fossils.
Carbon 14 Dating 1. Created by Sal Khan.
Introduction to carbon as a building block of life.
The mechanics of the carry trade. Created by Sal Khan.
Find out how hair simulation tools were used in the film the Good Dinosaur.
Simple example of cash accounting. Created by Sal Khan.
How categorical grants, mandates, and the Commerce Clause have been used to expand federal power over state affairs.
Causes and effects of human migration in Africa and the Pacific.
Exchange rates are determined in the foreign exchange market, but what causes those exchange rates to change? In this video, learn about why the supply or demand for a currency might change.
Learn about how phospholipids form the cell membrane, and what types of molecules can passively diffuse thorugh the membrane. By William Tsai. . Created by William Tsai.
Learn about the major components that make up our cell membrane and the fluid mosaic model. By William Tsai.
Learn about the different types of proteins that exist on the cell membrane. By William Tsai.
Yeast can reproduce sexually through a signaling pathway known as the mating factor pathway. In this process, two haploid yeast cells combine to form a diploid cell. Yeast cells secrete a signal molecule called mating factor that attracts them to their mates. Once the mating factor of one yeast binds to the receptor on another yeast, an outgrowth called a "shmoo" forms, which allows the yeast cells to fuse together.
Thinking about the limiting factors of cell size. Focus on volume to surface area ratio.
Introduction to cell theory. Roles of Hooke, Leeuwenhoek and others in its development.
What cellular evidence do we have to construct evolutionary trees and believe that all life on Earth shares a common ancestry?