Nachos are delicious. And versatile because today they're also going to help us learn a thing or two about your digestive system. Nachos can provide us with energy and raw materials, by first ingesting something nutritious, propelling it...

Passive transport includes diffusion, facilitated diffusion, and osmosis, all of which move substances down their concentration gradients without energy input. Small, uncharged molecules like oxygen and carbon dioxide diffuse freely,...

Large molecules that are polymers of amino acids, linked in long chains by peptide bonds, and usually folded into a rough ball.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using...

This video provides a comprehensive overview of the human digestive system, including the two types of digestion (mechanical and chemical), the three basic food types (carbohydrates, proteins, and fats), and the enzymes involved in...

This video is a lecture presentation about digestive enzymes and how our bodies process the food we eat to extract important nutrients from it. The presenter explains the two types of digestion - mechanical and chemical, and focuses on...

This video is a lecture presentation on the human digestive system. The lecturer begins by defining digestion and explaining the two types, chemical and mechanical digestion, and how they work together. The three basic food types,...

It's time to start learning about all the monomers that make up large biomolecules, and the first one we will look at is the amino acid. These make up proteins, which is most of what you are, so this is pretty important stuff!

Enzymes are really important proteins, that speed up the rates of reactions such as in photosynthesis, respiration and protein synthesis. The enzymes and substrates are always moving, and occasionally they collide at the right speed and...

Small intestine and food absorption Digestion goes hand in hand with absorption… which happens in your small intestine. Which is what we’re going to look at in this video. So keep watching!