Understanding Macromolecules and Energy from Food
Explore the world of macromolecules including carbohydrates, lipids, proteins, and nucleic acids, and learn how energy is derived from food through the consumption of these large molecules. Discover the different types of carbohydrates, their sources, and energy-giving properties. Gain insights into monosaccharides, disaccharides, and polysaccharides, and their roles in providing immediate and sustained energy. Uncover the essence of macromolecules and their impact on our daily lives.
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Presentation Transcript
Announcements 1. Lab Wednesday Extra Credit: bring in a food to test: MUST BE DRY and cannot not contain nuts
Macromolecules 4 Types: 1. Carbohydrates 2. Lipids 3. Proteins 4. Nucleic Acids ** All are large molecules created by joining together small ones **
How do we measure energy from food? Number of calories it provides 4 MACROMOLECULES 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: 1. Monosaccharide 2. Disaccharide 3. 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
