Only a handful of Denisovan fossils have been identified. In the absence of actual body fossils, it’s impossible for us to reconstruct their morphology, right?

Have you heard of plant grafting? With this age-old trick, you can get a tree to bear fruit in half the time, not to mention a myriad of other miracles! Learn all about what grafting can do for you in this SciShow episode hosted by Rose...

Did you know that your environment and lived experiences can actually affect your DNA? Welcome to the world of epigenetics! In this fun episode of SciShow, Hank & his clone Circus Hank explain the power of epigenetics, which studies the...

Future advances in engineering may come from chemistry. From molecular motors to salt-shaker-drug-deliverers, the future looks small.

Substitution reactions can have really powerful effects, both good and bad, in our bodies. You might remember substitution reactions as displacement reactions from general chemistry, but (you guessed it!) in organic chemistry they’re a...

We’ve spent the last few episodes talking about substitution reactions, but now it’s time to talk about a related type of reaction: elimination reactions! Elimination reactions are super important because they are the main way we can...

You know all about how DNA bases can code for an organism's traits, but did you know there's more influencing phenotype than just the bases? Explore epigenetics with the Amoeba Sisters by learning about a few types of epigenetic marks...

If you plant a seed from your orange, you might have to wait as long as 15 years to get a tree with fruit, which is kind of a bummer for the impatient types among us. Fortunately, there’s an age-old trick called grafting that can shorten...

Today Hank talks about the deliciousness of alkenes & alkynes, their structures, and how to remember which is which by simply knowing the alphabet. Also, he breaks down hydrogenation, halogenation, polymerization, and...

Hank & his clone Circus Hank explain the power of epigenetics, which studies the factors that determine how much or whether some genes are expressed in your body.

Hydrophobic nature of silicones , fear of water | Silicones - water repellent | Electronic repulsions between bulky methy and water groups | Thermal stability of silicon | piezo-electric effect|Applications of silicones ; Silicones...

Stereoisomerism refers to isomers that have the same molecular formula and connectivity but differ in the three-dimensional arrangement of their atoms. This type of isomerism includes both geometrical isomers and optical isomers....

An introduction to the Wittig reaction.

Cholesterol biosynthesis is divided into 4 general stages. This video diagrams stage 4 in which lanosterol is converted into cholesterol. Also, see how vitamin D is generated from this pathway.

In this video, we discuss Caffeine Demethylase Mechanism

Vitamin A Functions and Retinoid Cycle

In this video, we explore the biosynthesis of the psychedelic drug, psilocybin, and its mechanism of action, metabolism, and elimination.

Coproporphyrinogen Oxidase: Physiology, Biochemistry, and Organic Mechanism

For this one we need to understand the stereospecificity of hydrogenation over platinum metal, stereochemical relationships, and the relative stability of cyclohexane chair conformations.

Lesson on Carnitine Biosynthesis. Carnitine is an important metabolite that is required for transportation of long chain fatty acids into the mitochondria via the Carnitine shuttle. Carnitine can be derived from dietary sources or from...

Steroids have gotten a pretty bad rap! In reality, they're not just the big bad anabolic steroids. This class of molecules includes many vitamins as well as cholesterol. Cholesterol has also gotten a bad rap! We need cholesterol for our...