How do you make an enzyme stop working? The video explains the process of denaturing enzymes. It lists many uses for this process and examples that young scientists understand from experience.

Crystal ball or big, hairy, dirty snowball? Take young astronomy scholars on an up-close investigation of comets with a video. Topics include the makeup of comets and their two tails, long- and short-period comets, and how they interact...

Protein makes up the second-most abundant substance in the human body. The video explains the relationship between proteins and amino acids. It also lists the many functions of proteins in humans, animals, and plants.

Don't let protein whey you down. Video focuses on the importance and structure of proteins. It connects the four structures of proteins, the way they connect, and the chemical properties of r-groups. 

In the 50s and 60s, pregnant women were prescribed Thalidomide, a stereoisomer that prevented morning sickness but caused severe birth defects. The instructor in the videos explain stereoisomers, enantiomers, and chirality using...

Don't copy from each other, unless you are DNA — in which case, please make an exact copy. The video explains protein synthesis including the difference in transcription and translation. It touches on codon and how reading three bases at...

An informative video covers how amino acids make proteins. It also covers their primary, secondary, tertiary, and quaternary structures. 

For thousands of years people have observed comets as they pass through the solar system, but could there be more to these celestial bodies than meets the eye? Watch this video to learn how these objects have recently been found to...

Nutritionist Radhia Gleis explains what metabolism is and how to assess it. Food is processed and used by the body producing waste in the end. The steps of the digestive system are explained from its beginning in the mouth to its end in...

Colorful pictures and animation accompany a thorough explanation of the digestive process. Each anatomical part of the digestive system is explained as well as the chemical signals that are affiliated with digestion and absorption....

A quick, detailed explanation of digestion is given alongside textbook drawings of the mouth and intestines. This video would most likely help higher learners since there is no animation or simple explanations. Using scientific...

How did life first arise on earth? There are many theories and scientists Stanely Miller and Harold Urey set out to recreate the environment of early earth in order to find some answers. Watch this video from NOVA to see the results of...

A detailed introduction to dioxyribonucleic acid, otherwise known as DNA. [28:05]

Understand why the central dogma of molecular biology is amino acids with this video. [9:53]

Once the structure of DNA was discovered, the next challenge was determining how the sequence of letters coded for the 20 amino acids could make protein. In theory, one or two letters can only code for 4 or 16 amino acids, respectively....

In this video, you'll learn about the general structure of amino acids, which include an amine group, a carboxylic acid group, and a unique side chain (R-group) attached to the alpha carbon. In addition, we'll explore where amino acids...

Introduction to proteins as polymers of amino acids (monomers). [5:53]

Use an amino acid translation table to understand the impact of point and frameshift mutations. [8:52]

Certain amino acids stand out for their unique properties. In this video, you'll learn more about what makes histidine, proline, glycine, and cysteine unique. [8:18]

Millions of neurotransmitters can be categorized in multiple ways. This video explains the most common way to categorize, which is by their molecular structure. [8:45]

A deep dive into how mRNA is translated into proteins with the help of ribosomes and tRNA. [14:11]

Video talks about the two main methods of alpha-amino acid synthesis: Gabriel synthesis and Strecker synthesis. [5:23]

A 1958 experiment mimicking a volcanic eruption formed many amino acids, according to new analysis.

This lesson will describe the levels of protein structure as well as define the role of proteins in your body. It is 8 of 9 in the series titled "Proteins."