Notes

Nutrients  The food you eat is a source of nutrients.  Nutrients keep your body functioning.

Your body needs nutrients to…  Work as a fuel/energy  Help you grow  Repair itself  Maintain basic bodily functions.

Balance is Key For years, people held to the idea that there are “bad” nutrients and “good” nutrients when, in fact, all nutrients play a certain role in the body. Even those nutrients once considered “bad” such as fats and carbohydrates perform vital functions in the body and if one consumes too many “good” nutrients such as vitamins or minerals there can be harmful results, as well.

 Balance - Eat foods from all of the food groups.  Variety - Eat different foods from each food group.  Moderation – Do not eat excessively from any group and portion size

The 6 Essential Nutrients 1. Water 2. Carbohydrates 3. Protein 4. Lipids (Fat) 5. Vitamins 6. Minerals

What is an Organic molecule?  What is an Organic molecule?  Organic molecules contain Carbon  Organic molecules, substances that contain carbon-hydrogen bonds.  The major classes of organic molecule include carbohydrates, proteins, lipids & vitamins.

What is an Inorganic Molecule?  Molecules that DO NOT contain carbon.  DO NOT have carbon-hydrogen (C-H) bonds; generally they are simple and not normally found in living things.  Water & minerals are considered inorganic molecules

Monomers & Polymers A monomer is a molecule that is able to bond in long chains. Here is a monomer: Here is a polymer:  A large molecule made from many similar small molecules called subunits or monomers  In other words, Each MONOMER is a BUILDING BLOCK in the structure of a POLYMER

3 major classes of organic compounds ClassSubunit/ Monomer Polymer Carbohydrates Sugar Mono- saccharide Poly saccharides LipidsFatty acidsLipids ProteinsAmino acidsProteins

Macronutrients vs. Micronutrients  Provide the body with energy  Are required in large amounts  Examples: Carbohydrates, lipids & proteins  Do NOT provide the body with energy  Are NOT required in large amounts  Examples: vitamins and minerals

Water  Although water does not provide the body with energy it is required in large amounts so it is in a category of its own.