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Digestive System - Coggle Diagram
Digestive System
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Enzymes
Large proteins - made up of chains of amino acids, can form unique shapes to allow enzymes to do their jobs
A catalyst - substance that increase the speed of a reaction without being changed or used up in the reaction
Every enzyme has an active site with a unique shape that fits onto the ssubstrate. Active site changes shape a bit as the substrate binds to it. This enables a tighter fit, and is called the induced fit model.
Digestive enzymes convert large food molecules into small soluble molecules that can be absorbed into the bloodstream.
The sites of production and the action of amylase, proteases, and lipases
Carbhyrases break down carbohydrates into simple sugars. Amylase is a carbohydrase that breaks down starch into glucose. It is made in the salivary glands, pancreas and small intestine
Proteases are made in the stomach, pancreas and small intestine. Proteases break down proteins to amino acids.
Lipases break down lipids (fats) to glycerol and fatty acids. Lipases are made in the pancreas and small intestine
Types of digestion
Physical - no chemical
mouth (chewing) and stomach (churning) - breaks food into smaller pieces to increase the surface area for chemical digestion
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