Nutrients… Are substances in food that provide energy and materials for cell development, growth, and repair.
Classes of Nutrients Carbohydrates Carbohydrates: main source of energy Proteins Proteins: used for growth. Made of amino acids. Fats Fats: provide energy (stored) and help body absorb vitamins Vitamins Vitamins: organic nutrients that help your body to use other nutrients.
Classes of Nutrients Minerals Minerals: Inorganic nutrients that regulate many chemical reactions in your body. Water Water: Most vital factor for survival, other than oxygen. Water enables chemical reactions to take place in your cells.
Classes of Nutrients Minerals Water Digestion and Nutrients Inorganic (no carbon)
Enzymes Enzymes are molecules that speed up the rate of chemical reactions They do this without being changed or used up. Enzymes also speed up reactions by reducing amount of energy necessary for a chemical change to begin.
Digestive Enzymes are: AMYLASE is a starch-degrading enzyme secreted in the mouth. This enzyme breaks down carbohydrates. PEPSIN, found in the stomach, causes complex proteins to break down into less complex proteins. Enzymes are also responsible for MANY chemical reactions in your body---not just the ones involved in digestion!