Cells need energy to power the chemical reactions that keep their microscopic cities running, and most of that energy comes from a chemical called ATP. In this episode of Crash Course Biology, we’ll learn how our cells use energy, what...

Despite the diverse appearance and characteristics of organisms on Earth, the chemicals that make up living things are remarkably similar, often identical. In this episode of Crash Course Biology, we’ll look at the building blocks of the...

Esters have a wide range of uses, from giving perfumes and colognes their fragrances, to preventing diseases like scurvy. Vitamin C, that scurvy preventing antioxidant, is derived from carboxylic acids, a class of organic compounds we’ve...

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.

Paul Andersen describes the four major biological molecules found in living things. He begins with a brief discussion of polymerization. Dehydration synthesis is used to connect monomers into polymers and hydrolysis breaks them down...

Paul Andersen explains how polymers are formed from monomers. He describes how carbohydrates, protein and nucleic acids are created through condensation reactions. He also explains how these macromolecules are broken down through the...

Paul Andersen explains the structure, function and importance of adenosine triphosphate (ATP). He begins by describing the specific structure of the molecule and its three main parts: adenine, ribose sugar, and phosphate groups. He...

In this video, we explore what peptide bonds are, their crucial role in protein synthesis, and the fascinating process of their formation. Understand where peptide bonds are found in nature and their significance in biology and...

In acid and base chemistry, we learn that there are 3 main types of hydrolysis: salt, acid and base. In this video, I will show you a fun and crafty way to spice up your organic chemistry notes on this topic.

When 2 monosaccharides come together and form a glycosidic bond, they become a disaccharide. In this video, we will be looking at the structure and examples of disaccharides we find in nature.

Hydrolysis is a water-based chemical reaction, where water is used to break down a specific substance or molecule. In this video, we will look at a specific type of hydrolysis - hydrolysis of carbohydrates. We will learn how water is...

See how changing the tea or sugar used by a SCOBY biofilm impacts fermentation by measuring the biochemistry of the kombucha solution over time.

It introduces enzymes as the biological catalyst. It also describes their chemical structure, types, nomenclature and mechanism of action.

Looking at the usage of beta-dicarbonyl compounds.

Asparagine, Aspartate Catabolism to Oxaloacetate

Exercise Physiology | AMP, AMPK, & Energetic Stress

Protein Metabolism | Ubiquitination of Proteins & the 26S Proteasome

Citrate Synthase

Need some organic chemistry practice? Here's a tricky synthesis to try!

It gives details about the preparation of carboxylic acids.

Learn the basics about making soaps using hydrolysis. What are the methods and techniques used to make soaps? What is hydrolysis? Find out more in this video!

It explains the ionisation of acids and bases. It explains the term conjugate acids and bases. It derives the expression to calculate ionic product of water.

In this video we examine the process of digesting our food. We shall see how biological catalysts called enzymes break these food molecules apart and why they are necessary. Think of our food molecules as a train of trucks all coupled...