SciShow
The Science of the World's Most Colorful Corn
Don't be fooled! The yellow or white corn you see in the grocery store is only the tip of the rainbow-colored iceberg of corn coloration. And these more genetically diverse varieties of corn might just save our husks one day.
Amoeba Sisters
DNA Replication (Updated)
Explore the steps of DNA replication, the enzymes involved, and the difference between the leading and lagging strand! This video is an update from our old DNA replication video with nearly the same script but added detail and improved...
SciShow
Why Does Pepper Make You Sneeze?
It shouldn't be up your nose in the first place, but if it is, SciShow can explain why it makes you sneeze.
TED-Ed
The world's most painful insect sting | Justin Schmidt
One of these three creatures is thought to possess the world's most painful insect sting: there's an ant that forages in rainforest canopies, a bee that protects a hive of delectable honey, and a wasp that paralyzes tarantulas. So which...
Bozeman Science
Epigenetics
Paul Andersen explains the concepts of genetics. He starts with a brief discussion of the nature vs. nurture debate and shows how epigenetics blurs this distinction. He explains how differentiation of cell types results from the...
Bozeman Science
Catalyst Classes
In this video Paul Andersen explains how the three types of catalyst classes act to speed up reactions. Acid-base catalysts either add or remove a proton from one of the reactants. Surface catalysts provide active sites where reactants...
TED-Ed
TED-Ed: Biofuels and bioprospecting for beginners - Craig A. Kohn
Biofuels can provide energy without the reliance on environmentally harmful fossils fuels -- but scientists are still searching for a plentiful source. Craig A. Kohn demonstrates how cellulose, the naturally abundant tough walls of plant...
SciShow
Why Can't You Digest Grass?
You've probably seen cows enjoying a nice mouthful of grass, but why can't we do the same?
MinuteEarth
Why You Can't Build A Clone Army... (Yet)
Because of the way genetic reprogramming works, it’s hard to make one clone based on an adult cell, and it’s almost impossible to make a second-generation one.
TED-Ed
TED-Ed: Kenny Coogan: The wild world of carnivorous plants
Around the world there are more than 600 plant species that supplement a regular diet of sunlight, water and soil with insects, frogs and even rats. Flies, tadpoles and beetles fall prey to the remarkable, predatory antics of carnivorous...
SciShow
The Deal with Carbs
Carbs are pinned to be the villains in many diets, but those poor guys are just misunderstood.
Crash Course
Digestive System, part 3: Crash Course A&P
Nachos are great...if you are among the lucky ones whose body can digest them. When digestion goes according to plan, the small intestine performs most of your chemical digestion in the duodenum, while accessory organs including the...
SciShow
What Happens to My Wool Sweater in the Washer?
Be careful with your wool. Unless you want a nice piece of felt with some holes in it.
Crash Course
ATP & Respiration: Crash Course Biology
In which Hank does some push ups for science and describes the "economy" of cellular respiration and the various processes whereby our bodies create energy in the form of ATP.
Amoeba Sisters
Enzymes (Updated)
The Amoeba Sisters explain enzymes and how they interact with their substrates. Vocabulary covered includes active site, induced fit, coenzyme, and cofactor. Also the importance of ideal pH and temperatures for enzymes are discussed.
TED-Ed
TED-Ed: Are food preservatives bad for you? - Eleanor Nelsen
Food doesn't last. In days, sometimes hours, bread goes moldy, apple slices turn brown, and bacteria multiply in mayonnaise. But you can find all of these foods out on the shelf at the grocery store " hopefully unspoiled -- thanks to...
TED-Ed
TED-ED: How to sequence the human genome - Mark J. Kiel
Your genome, every human's genome, consists of a unique DNA sequence of A's, T's, C's and G's that tell your cells how to operate. Thanks to technological advances, scientists are now able to know the sequence of letters that makes up an...
Bozeman Science
Enzymes
Paul Andersen explains how enzymes are used to break down substrates. The correct shape of the active site allows a key/lock fit between the enzyme and the substrate. The enzyme catalase is used to break down hydrogen peroxide. The...
SciShow
Alcoholism: How much is too much?
An excessive amount of alcohol can cause lots of problems, but lots of people drink fairly regularly without any of these problems. So, how do you know when you drink too much?
TED-Ed
TED-Ed: How to make a mummy - Len Bloch
As anyone who's seen a mummy knows, ancient Egyptian priests went to a lot of trouble to evade decomposition. But how successful were they? Len Bloch details the mummification process and examines its results thousands of years later.
TED-Ed
TED-Ed: Meet the microbes that could eat your trash | Tierney Thys and Christian Sardet
Each year humanity produces roughly 400 million tons of plastic, 80% of which is discarded as trash. Of that plastic waste, only one-tenth is recycled. 60% gets incinerated or goes into the landfills, and 30% leaks out into the...
TED-Ed
TED-Ed: How does alcohol make you drunk?
Ethanol: this molecule, made of little more than a few carbon atoms, is responsible for drunkenness. Often simply referred to as alcohol, ethanol is the active ingredient in alcoholic beverages. So how exactly does it cause drunkenness,...
SciShow
New Bacterial Enzymes Could Revolutionize Blood Donations SciShow News
Blood banks need a constant supply of donors to maintain their supply, but some enzymes that are already in our bodies might be able to help!