Introduction to nucleic acids (e.g., DNA and RNA) and nucleotides.
Introduction to pH. Chart from Anatomy & Physiology, Connexions Web site.
Introduction to passive and active transport.
Perfect competition is a theoretical market structure in which there are many buyers and sellers, identical products (also called homogeneous products), perfect information, and no barriers to entry.
An overview of what physics is about as we delve deeper in future videos. How physics is related to math, the other sciences, and the world around us.
Present value is the value right now of some amount of money in the future. For example, if you are promised $110 in one year, the present value is the current value of that $110 today. Present value is one of the foundational concepts in finance, and we explore the concept and calculation of present value in this video. Created by Sal Khan.
Economists use the concept of price elasticity of demand to describe how the quantity demanded changes in response to a price change. In this video, explore a simple way to calculate the price elasticity of demand, how to interpret that calculation, and how price elasticity of demand varies along a demand curve.
We can calculate the price elasticity of supply to gauge how sensitive percent changes in quantity supplied are to percent changes in price.
Production functions describe how output is determined by various inputs. The short run is defined as the period of time in which at least one input is fixed. Anything longer than that is considered the long run.
Introduction to proteins as polymers of amino acids (monomers).
Introduction to series analyzing income and wealth trends in the US. Created by Sal Khan.
An introduction to the Black-Scholes formula.
The Crusades begin in reaction to Pope Urban II's call to help the Byzantine Empire reclaim land from Muslim rule (especially Jerusalem).
What was Western Europe like before the Protestant Reformation? Learn about the influence of the Catholic church and the issues that led a monk named Martin Luther to demand reform. Created by Beth Harris and Steven Zucker.
Introduction to the cell.
Introduction to the federal bureaucracy.
The income statement, revenue, gross profit, operating profit, net income, ROA and ROE. Created by Sal Khan.
Price to Earnings Ratio (or P/E ratio). Created by Sal Khan.
What are the stages of making policy in the United States?
Introduction to the treasury yield curve. Created by Sal Khan.