Amoeba Sisters
Sodium Potassium Pump
Explore the sodium potassium pump (Na+/K+ pump), with the Amoeba Sisters! This video talks about why this pump is needed and provides an overview of this type of active transport. Table of Contents: 00:00 Intro 0:48 Introducing the...
TED-Ed
TED-ED: How atoms bond - George Zaidan and Charles Morton
Atoms can (and do) bond constantly; it's how they form molecules. Sometimes, in an atomic tug-of-war, one atom pulls electrons from another, forming an ionic bond. Atoms can also play nicely and share electrons in a covalent bond. From...
SciShow
The Truth About 'Truth Serum'
Sodium pentothal, the so-called "truth serum,' is real! But does it work? Find out what "truth serums' do, and how your brain lets you tell lies.
Bozeman Science
Synthesis and Decomposition Reactions
Atoms or molecules combine to form a new compound in a synthesis reaction. Examples include the addition of oxygen to magnesium metal to create magnesium oxide and the addition of carbon dioxide to water to crete carbonic acid. A combine...
Bozeman Science
The Nervous System
Paul Andersen begins this podcast with a discussion of brain lateralization and gives a brief demonstration of tests that were performed on split-brain individuals. He then discusses the major parts of a neuron and explains how action...
Bozeman Science
The Action Potential
In this video Paul Andersen details the action potential in neurons. The resting potential of a neuron (-70mV) is maintained through differences in concentration and permeability of Na, K, and Cl ions. A graded potential is created as...
SciShow
Why Can't We Make a Good Salt Substitute?
We have many alternatives to sugar, but where are all the salt substitutes?
SciShow
Why Does Lithium Help Bipolar Disorder?
There’s no doubt that lithium has a diverse list of uses. But the way that it interacts with our bodies to help treat bipolar disorder is aiding us in better understanding the disorder and potentially developing new drugs to combat it.
SciShow
Can I Die From Too Much Water? Blood? Oxygen?
We all know that we need things like water and oxygen to live, but what happens when you get too much of a good thing?
SciShow
Why Does Salt Make Food Taste Better?
Salt doesn’t just make things salty! It has a lot of different effects on how we perceive flavors!
SciShow
The Impossible Element Hiding in the Sun
Not all of the naturally occurring elements were discovered here on Earth. Helium was discovered by examining sunlight, and that same technique is now teaching us about the composition of distant galaxies.
SciShow
Earth Has Another Magnetic Field
You probably know about the geomagnetic field that protects the earth from solar storms and radiation. But precision satellites have measured ANOTHER magnetic field coming from Earth, and its signals might hold the key to searching for...
SciShow
The Poison Squads: The Stupid, Risky First Food Safety Tests
It can be easy to take for granted the fact that there isn’t formaldehyde in your milk.
SciShow
Can Pickles and Bananas Really Help Athletes?
Some athletes swear by pickle juice and bananas, but how do they help? Quick Questions explains!
SciShow
Why You Can't Bake a Mason Jar
Regular old glass like the kind that makes up a mason jar can shatter and explode if put in the oven. But we do have types of glass that you can bake your pie or brownies in and it's all thanks to some neat chemical tricks.
Crash Course
Blood Vessels, part 2: Crash Course A&P
And now we return to blood vessels. In this episode, we start discussing what blood pressure is, how it can become "high", and what that means for our health. One of the more interesting points is that your body has ways of dealing with...
SciShow
Why Is Salt So Bad for You, Anyway?
You've probably been told that eating too much salt is bad for you, especially if you have high blood pressure. But what exactly does salt do to our bodies that can make it so hard on our hearts?
Crash Course
Bonding Models and Lewis Structures: Crash Course Chemistry
Models are great, except they're also usually inaccurate. In this episode of Crash Course Chemistry, Hank discusses why we need models in the world and how we can learn from them... even when they're almost completely wrong. Plus, Lewis...
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
Dipole Forces
In this video Paul Andersen describes the intermolecular forces associated with dipoles. A dipole is a molecule that has split charge. Dipole may form associations with other dipoles, induced dipoles or ions. An important type of...
TED-Ed
TED-Ed: The surprising reason our muscles get tired - Christian Moro
Why do our muscles get tired and sore after exercise? Explore how our muscles function, and how you can exercise longer without experiencing muscle fatigue. -- You're lifting weights. The first time feels easy, but each lift takes more...
Bozeman Science
Solutions
In this video Paul Andersen explains the important properties of solutions. A solution can be either a solid, liquid or gas but it must be homogeneous in nature. The solutes can not be separated with a filter and so either chromatography...
SciShow
Making Plants High-Tech With Artificial Neurons | SciShow News
Biology and technology grew closer together when scientists manufactured neurons that acted like those in a brain! And birds evolved to protect themselves in two ways: fight and flight.
SciShow
The Milky Way Broke Its Arm
The spiral of the Milky Way is not as smooth as we once thought because an arm not so far from home appears to be broken! And we may have discovered the answer to why a local asteroid puts on the appearance of a comet.