carbohydrates when excess glucose is taken in at a meal: -glucose molecules are combined to form a...
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Carbohydrates
When excess glucose is taken in at a meal:
- Glucose molecules are combined to form a long-chained polysaccharide called glycogen.
Glycogen:- Supplies glucose in periods between meals.- Liver stores glycogen.- Broken down into glucose molecules and is used
for energy.
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Red areas indicate glycogen.
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Cellulose
• Carbohydrate• Water-insoluble fiber• Cannot dissolve in waterFound in: carrots, celery, cereal and breads.
We can’t digest cellulose.Retains water to help move feces through large
intestine.
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Lipids
• During exercise triglycerides provide a larger proportion of the body’s energy demand.
• Atherosclerosis – buildup of cholesterol deposits, called plaque on walls of arteries.
From: steak, hamburgers, cheese, chicken with its skin, bacon, whole milk…
More common in people that do not exercise and smokers.
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Amino Acids and Protein
• Protein in our diets is broken down to produce amino acids.
Ex. Hair, fingernails, part of our bones
Essential amino acids: amino acids that are not made in sufficient amounts.
All the amino acids we need are found in: milk, eggs, meat, fish, poultry, cheese, and soy product.
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Vitamins
• Water-soluble vitamins: vitamin C and 8 different forms of vitamin B.
• Work in conjunction with enzymes, promoting the cellular reactions that supply energy or synthesize cellular materials.
• Readily eliminated by the kidneys; not stored in the body.
• Thought excesses of these vitamins can be toxic.
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• Deficiency of Vitamin C
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Vitamins
• Fat-soluble vitamins• Vitamin A,D,E,K.• Vitamin A is converted to light-sensitive
pigments in receptor cells of the retina.• Stored in body fat and accumulate in the fat
reserves.• Excess Vitamin D can cause weight loss,
nausea, and irritability.
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Deficiencies
• Excess of Vitamin D can produce rickets.
• Causes bone deformities.• Dietitians recommend taking
vitamin supplements if you don’t eat a balanced diet.
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Antioxidants
• Why is everyone against oxidants?• Eliminates oxidants in the blood that are
involved in cholesterol build up in the walls of arteries.
• Oxidants may contribute to cancer.• Diet rich in antioxidants may reduce heart
attacks, stroke, and cancer.• Found in: fruits, vegetables, soy milk, tofu, tea,
and red wine.
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