A vitamin d b folate c vitamin e 16 this is a

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a. Vitamin D b. Folate c. Vitamin E 16) This is a provitamin, or precursor, of the active form of vitamin A. a. Retinol b. Tocopherol c. Beta carotene 17) Your skin can turn orange if you consume large amounts of foods high in this substance. a. Vitamin C b. Retinoic acid c. Beta-carotene 18) This vitamin is essential to good sight. a. Vitamin A b. Vitamin B-12 c. Vitamin C 19) This is an active form of vitamin A found in rhodopsin a. Carotene b. Retinoic acid c. Retinal 20) Supplementing the diet with 3 times the RDA for vitamin A is a toxic amount. a. There is no toxic amount b. Yes c. No Chapter Nine 1) This fibrous protein gives bones their flexibility
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Unit Three Test of April 19, 2017 a. Marrow b. Calcium phosphate c. Collagen 2) This compact bone is very dense and makes up 80% of your skeleton a. Collagen b. Cortical c. Trabecular 3) This is the spongy bone found at the end of long bones a. Columnar b. Cortical c. Trabecular 4) This type of bone activity dominates during adulthood a. Modeling b. Remodeling c. Growth 5) By this age your body has reached its peak bone mass a. 30 years b. 40 years c. 20 years 6) These cells synthesize new bone matrix and are called bone builders a. Osteoclasts b. Osteoblasts c. Osteobuilders 7) This alkaline mineral is important to the acid-base balance of the blood as well as bone structure a. Sodium b. Chloride c. Calcium 8) When blood calcium levels fall, this hormone stimulates osteoclasts to breakdown bones and release calcium a. PTH b. Insulin c. ATP 9) This hormone inhibits absorption of calcium by the kidneys and limits absorption in the intestines a. Parathyroid hormone b. Insulin c. Calcitonin 10) Which of the following is the best definition of bioavailability? a. The degree to which absorbed minerals are biologically active in the body b. The prevalence of critical nutrients in the diet c. The ability of the body to absorb and use any nutrient 11) This binding factor found in some plant foods prevents calcium absorption in the small intestines a. Lard
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Unit Three Test of April 19, 2017 b. Oxalate c. Hemicellulose 12) This condition results when blood calcium levels are abnormally high a. Neither a or b b. Hypercalcemia c. Hypocalcemia 13) This vitamin is critical to normal calcification of bone a. Vitamin A b. Vitamin C c. Vitamin D 14) During winter vitamin D synthesis is insuffiecient for those living at latitudes greater than this value a. 37 degrees North b. 42 degrees North c. 52 degrees North 15) The incidence of vitamin D deficiency is declining among adults living in the U.S. a. True b. False 16) This fat-soluble vitamin assists in the production of prothrombin a. Vitamin D b. Vitamin E c. Vitamin K 17) This mineral combines with calcium to form hydroxyapatite crystals that make bone hard a. Manganese b. Zinc c. Phosphorous 18) This mineral is part of bone structure and influences the formation of hydroxyapatite crystals by regulating calcium balance a.
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