Download Nutrition - Southwest High School

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