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20 Cards in this Set
- Front
- Back
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Food vs. Nutrients
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Food is anything you can eat
Nutrients are the chemicals inside food that maintain you |
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3 classifications of nutrients
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Body-building, Regulatory, Energy providing
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Determinants of food consumption
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Biologic environment
Ecologic environment Socio-cultural environment |
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Starch
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storage form of carbohydrate in plants
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intermediate product of digestion
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Dextrin
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Dextrin
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Intermediate product of starch digestion
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What is excess glycogen converted to?
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Fat
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why can't humans digest dietary fiber?
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they lack the enzyme that can break beta-linkages
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why does fat provide more energy?
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longer hydrocarbon chain (More C and H than O)
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why are polyunsaturated fats less stable?
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More subject to oxidation because they have more double bonds
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what is the meaning behind Omega-3 and Omega-6?
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3 and 6 are the distances of the first double bond from the methyl end
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What are the fat-soluble vitamins?
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A, D, E, K
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how do LDL and HDL function in transport?
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LDL transfers cholesterol from liver to arteries, while HDL transfers cholesterol from cells of the body to the liver
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Fat malnutrition
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deficiency in fat leads to protein breakdown and weight loss.
-Retarded growth, eczematous skin |
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omega-3 and omega 6 functions
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omega-3 are anti-inflammatory, vasodilating, anti-aggregatory, anti-thrombotic. Omega-6 is opposite.
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Signs of protein malnutrition
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weakness, weight loss, pallor, edema, scaly skin
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ways of improving protein quality
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complementation - providing foods rich in different sources of AA to get complete set.
Supplementation - adding protein rich foods to diet Fortification - adding the actual AA to the food Enrichment - restoring what was lost during the milling process |
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Factors influencing BMR
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body size, gender, body temp, growth, age
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Important minerals
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Calcium, iron, zinc, iodine, selenium, Vit A, D, E, K, C, Thiamin, riboflavin, cobalamin, niacin, folic acid
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Functions of water in body
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transports nutrients, solvent, participates in reactions, electrolyte balance, component of every cell, lubricant, hydrates skin, regs body temp, protects fetus, ensures blood vol.
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