What Happens to the Food You Eat?

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Presentation transcript:

What Happens to the Food You Eat? Biology

Enzymes Complex molecules, proteins Function: Speed up chemical reactions that otherwise would take place slowly Catalyst Required in small amounts Not used up:Reusable Have a narrow range of temperature and PH Have specific active site (lock and key)

Enzymes Naming enzymes Examples Usually end in -ase Combine the name of substrate with -ase Examples Substrate Sucrose , enzyme sucrase Substrate Lactose, enzyme lactase Exception: Substrate hydrogen peroxide, enzyme catalase

Lock and Key Hydrogen Peroxide H2O2 Catalase Hydrogen Peroxide --> Water and Oxygen + H2O O2

Enzyme Function Substrate Enzyme

Carbohydrates A. Amylase A. Mouth Q. Where are carbohydrates digested? Q. What is the enzyme that breaks carbohydrates down? A. Amylase

Proteins A. Pepsin A. Stomach Q. Where are proteins digested? Q. What is the enzyme that breaks proteins down? A. Stomach A. Pepsin

Lipids A. Small Intestine Q. Where are lipids digested? Q. What is the enzyme that breaks lipids down? A. Pancreatic lipases