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.

Lactose intolerance is quite common, especially in Asian countries. The reason behind this is gene-culture co-evolution. Lactose intolerance is the inability to digest lactose in milk because they lack the lactase enzyme. A 1981 study...

When it comes to mammals, we are the only species that drinks milk directly from other species, or we are the only one that does so in adulthood. Most juvenile animals can drink and digest their mothers milk because they carry the enzyme...

Diarrhea happens when there is an imbalance in water secretion and absorption within the body. This excess water causes the stool to pass through quicker than normal. Diarrhea feels like the food takes a “fast pass” out of the gut....

In this video, Justin from the Institute of Human Anatomy discusses the how lactose in metabolized in the body, the eventual slowdown and ceasing of lactase, what happens to the colon when bacteria start consuming lactose, and the...

Diarrhea happens when there is an imbalance in water secretion and absorption within the body. This excess water causes the stool to pass through quicker than normal. Diarrhea feels like the food takes a “fast pass” out of the gut....

1) Theory behind the triple sugar iron (TSI) in microbiology. 2) How to identify A/A, K/K, and K/A reactions. 3) How to identify production of gas and/or hydrogen sulfide (H2S).

Best & Worst Foods to Eat with Irritable Bowel Syndrome (IBS) | How to Reduce Risk and Symptoms of IBS



IBS is a functional bowel disorder involving intermittent and chronic abdominal pain that is associated with changes in...

Microbiology: MacConkey Agar

Basics of Amino Acid Structure (Part 1)

1) What is the function of the enzyme, lactase? 2) What is the cause of the flatulence and diarrhea associated with lactose intolerance?

Microbiology: Triple Sugar Iron Agar

Microbiology: Urea Test

Lesson on galactose absorption, metabolism via the Leloir pathway, and the medical condition known as galactosemia. Galactose is monosaccharide, which is typically ingested in the form of lactose (galactose + glucose) or free galactose...

Lesson on multiple endocrine neoplasia type 1 (MEN-1). MEN-1 is a rare heritable disorder that predisposes affected individuals to tumours in the pituitary, parathyroid glands and the pancreas. Tumours in the pituitary, parathyroid...

Lactose intolerance is quite common, especially in Asian countries. The reason behind this is “gene-culture co-evolution”. Lactose intolerance is the inability to digest lactose in milk because they lack the lactase enzyme. A 1981 study...

When it comes to mammals, we are the only species that drinks milk directly from other species, or we are the only one that does so in adulthood. Most juvenile animals can drink and digest their mother’s milk because they carry the...

Learn the basics about Other acids. Acids have a variety of applications for the industrial and domestic markets. What does that mean? Find out more in this video!

Lactose Transporter How Does it Work

1) Theory behind MacConkey agar in microbiology.<br/>
2) How to identify bacteria as Gram(+) <br/>or Gram(-).
3) How to identify bacteria as Lac<br/>tose(+) or Lactose(-).

This video discusses in detail the purpose, functions, and organization of the Lac Operon.<br/>

Infants usually get the nutrients they need to grow and survive from their mother's milk. As we get older, some people drink the milk of other animals like cows to get nutrients, while other people develop lactose intolerance. Explore...

Now that we know about simple sugars, we need to know about how these polymerize to form long polysaccharide chains, like cellulose, starch, and glycogen. Check it out!

Learn about carbohydrates within the overall topic of organic chemistry.