MACROMOLECULES.

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Presentation transcript:

MACROMOLECULES

Announcements Lab Wednesday – Extra Credit: bring in a food to test: MUST BE DRY and cannot not contain nuts

Macromolecules 4 Types: Carbohydrates Lipids Proteins Nucleic Acids ** All are large molecules created by joining together small ones **

How do we measure energy from food? 4 MACROMOLECULES Number of calories it provides Carbohydrates Proteins Lipids Nucleic Acids Energy gained by consuming food = calorie

Carbohydrates ** Also called saccharides ** Carbon, Hydrogen, Oxygen 1 C : 2 H : 1 O = ratio Roles: energy, digestion, absorption, eliminates toxins/waste 3 types: Monosaccharide Disaccharide Polysaccharide

Energy Gained From Carbohydrates Eating 1 gram of carbohydrates provides your body with 4 Calories.

1. Monosaccharides “Simple Sugars” Example: Glucose Sources: Fruit, Cookies, Candy, Honey Sweet taste & give IMMEDIATE energy

2. Disaccharides 2 monosaccharides linked together Examples: sucrose (table sugar), lactose (milk), maltose (starch) Sweet taste & quick source of energy

3. Polysaccharides Long carbohydrate chains “Complex Carbohydrates” Digestion takes longer & sustained use of energy Examples: Amylose (starch), Glycogen, Cellulose Sources: bread, pasta, oatmeal, rice, broccoli, kidney beans, chick peas