In some cases, a cell can fix DNA damage simply by reversing the chemical reaction that caused it. To understand this, we need to realize that "DNA damage" often just involves an extra group of atoms getting attached to DNA through a...

Zinc Finger Nucleases (ZFNs) are engineered molecular tools composed of a zinc finger DNA-binding domain fused to a FokI DNA-cleavage domain, allowing precise targeting and cutting of specific DNA sequences. Once the DNA is cut, natural...

Reagents- 3% Hydrogen peroxide Principle- This test demonstrate the presence of catalase, an enzyme that catalyses the release of oxygen from hydrogen peroxide (H2O2). It is used to differentiate those bacteria that produce an enzyme...

This video is answering the question of what is an enzyme.

This video is answering the question of how are enzymes used in daily life.

This video is answering the question of what is metabolism.

This video is answering the question of what is an enzyme substrate.

This video is answering the question of what are metabolic reactions.

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...

Short answer: Yes, drinking a lot of water will certainly change the pH of the stomach, but this amount is trivial. However, since your stomach is very acidic, to begin with, drinking water will not dilute it significantly. Also, there...

The infamous “serial killer gene� is the monoamine oxidase-A gene, also known as the MAO-A gene or the warrior gene. It codes for an enzyme that metabolizes neurotransmitters such as dopamine, norepinephrine, and serotonin. Dopamine...

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...

An important digestive enzyme which breaks down starch into sugar. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...

In materials science, the substrate is the surface on which a coating is deposited. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...

An essential stage in cell division and reproduction, allowing genetic material to be copied into a new cell. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...

The process by which microorganisms can convert carbohydrates into other products. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary...

Proteins are at the root of virtually all bodily functions, from growth to metabolism to transporting oxygen around the body. Learn how your body makes or ingests all the protein you need. Chemistry - Chemical Industries - Learning...

We use the enzyme pepsin and hydrochloric acid to simulate the conditions within the stomach in two boiling tubes. Cooked egg whites are ground and added to two boiling tubes of hydrochloric acid, but one is mixed with a crushed antacid...

We demonstrate denaturing by adding the enzyme trypsin to photographic film. Strips of photographic film are added to trypsin solution at different temperatures to determine the optimum conditions for the enzyme. In the right conditions...

Discover the chemical process which produces some of our most common foodstuffs, from bread to yoghurt, to wine and vinegar. Chemistry - Chemical Industries - Learning Points. Fermentation is the process of converting sugar and other...

A biological catalyst. Enzymes are specialised proteins that speed up biochemical reactions. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...

The infamous “serial killer gene” is the monoamine oxidase-A gene, also known as the MAO-A gene or the warrior gene. It codes for an enzyme that metabolizes neurotransmitters such as dopamine, norepinephrine, and serotonin. Dopamine and...

This video discusses a groundbreaking discovery by scientists at Cambridge University who have successfully restored neurological function to rats with injured spinal cords. By using a bacterial enzyme called chondroitinase, they were...

British scientists have made a groundbreaking discovery in restoring movement to rats paralyzed by spinal injury. By using an enzyme called chondroitinase ABC, they were able to overcome the scar tissue that prevents nerve regeneration....