Thomas Malthus's views on population. Malthusian limits. Created by Sal Khan.
Understanding the structure of a muscle cell. Created by Rishi Desai.
what is our memory limit? How can save time at the expense of space? Created by Brit Cruise.
The use of tone in visual storytelling.
Tools and parts. Created by Karl Wendt.
Critical incident angle and total internal reflection. Created by Sal Khan.
Introduction to transcription including the role of RNA polymerase, promoters, terminators, introns and exons.
A deep dive into how mRNA is translated into proteins with the help of ribosomes and tRNA.
Learn the physics behind why a balloon clings to things after you rub it on a sweater.
A quick review of some ideas from trigonometry that will help us with AC analysis. The definitions of sine, cosine, and tangent, circles, degrees, radians. Created by Willy McAllister.
The trp operon is a well-studied operon when it comes to gene regulation. It is involved in the biosynthesis of the amino acid tryptophan.
Alpha, Beta, Gamma Decay and Positron Emission. Created by Sal Khan.
Sal defines and compares tension, weight, friction and normal forces using free body diagrams.
Innate vs. adaptive immunity. Humoral adaptive immunity vs. cell-mediated adaptive immunity. Created by Sal Khan.
Learn how to read and draw phylogenetic trees, or cladograms. Created by Sal Khan.
Difference between BC, BCE, AD and CE. A little bit about the birth of Jesus as well. Created by Sal Khan.
When multiple forces are acting on a particle we'll need to express them as a single force known as a net force.
Uniporters, symporters, and antiporters are proteins that are used in ƒ??transportƒ?? of substances across a cell membrane. Uniporters are involved in facilitated diffusion and work by binding to one molecule of substrate at a time to move it along its concentration gradient. Symporters and antiporters are involved in active transport. Antiporters transport molecules in opposite directions, while symporters transport molecules in the same direction.
Overview of micturtion/urination.
Learn how to bring JavaScript libraries into your webpage.