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Nutrition: View Nutrition Powerpoint 1) Find the Daily Recommended intake of Vitamin C -Men 90mg Women 75mg and B – 2.4 mg men and women 2) Find the Daily Recommended intake of Calcium – 1300mg - Sodium 2400 mg - Magnesium 400mg - Iron 18 mg 3) Identify FIVE Websites that list Daily Recommended Dietary Intake, at least should be International. www.mayoclinicom www.purelifestyle.com www.who.com www.livestrong.com www.medicalonline.com www.medicalnewstoday.com www.netrition.com www.myplate.gov 4) Why should different countries have their own specific Dietary Recommendations – give examples. a. Cultural – Religious restrictions b. Which food sources are available Energy Content of Macronutrients: the energy content values per 100g are: carbohydrate 1760 kJ, lipid 4000 kJ protein 1720 kJ. Or expressing Calories… Caloric Content Fat: 1 gram = 9 Calories Protein: 1 gram = 4 Calories Carbohydrates:1 gram = 4 Calories Metabolism: Metabolism is all the chemical processes which living organisms require to sutain life. Anabolism: Constructive phase of metabolism where smaller molecules convert to larger ones… Catabolism is where larger molecules are broken down into smaller ones…. http://www.youtube.com/watch?v=rjza24Oyalc http://www.youtube.com/watch?v=eFCa5hqBAdE Write notes on the characteristics of: Carbohydrate Metabolism – page 63 Digested to Monoscaharides – sent to liver Glycolysis – breakdown of Glucose – production of Pyruvate – synethesis of ATP Muscle Glycogen provides immediate energy for movement Glycogen stored in Liver provides energy to other organs Fat Metabolism – page 64 Beta Oxidation of the fatty acids. Krebs Cycle Body prefers to metabolize mono and polyunsaturated fats over saturated fatty acids Excess fat is stored in body tissue and skeletal muscle INSULIN Insulin controls the amount of sugar from digested foods circulating in your bloodstream, and allows cells to use the sugar for fuel or be stored for future needs. Watch the animation to learn the basics about insulin. http://www.sharecare.com/question/role-insulin-in-body Insulin is Part of a Balancing Act Insulin affects carbohydrate, protein, and fat metabolism. Your body breaks these nutrients down into sugar molecules, amino acid molecules, and lipid molecules, respectively. The body can also store and reassemble these molecules into more complex forms. Insulin causes the storage of these nutrients, while another pancreatic hormone called glucagon releases them from storage. Insulin is involved in your body's careful balancing act to keep your blood sugar levels within a normal range. In simple terms: If your blood sugar is high: The pancreas releases insulin to help cells absorb glucose from the bloodstream to lower blood sugar levels. If your blood sugar is low: The pancreas releases glucagon to help the liver release stored glucose into the bloodstream to raise blood sugar levels. Insulin is secreted by the beta cells of the pancreas in response to high blood sugar, although a low level of insulin is always secreted by the pancreas. After a meal, the amount of insulin secreted into the blood increases as the blood glucose rises. Likewise, as blood glucose falls, insulin secretion by the pancreatic islet beta cells decreases. Insulin also stimulates the formation of Glycogen. Glycogen is a form of Glucose stored in the liver. Insulin speeds up the use of energy used by Carbohydrate supplies but inhibits the uptake of energy derived from Fat and Protein stores. Nutrition Exercise: Use I-pads and go to www.supertracker.usda.gov Split into 5 groups of 2-3. Research the Supertracker site and become an expert in your designated section: Food-a-Pedia Food Tracker Physical Activity Tracker My Weight Manager My Top 5 Goals My Reports