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Nutrition Final

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Question
Answer
Recommended intake Iron   19-50 yrs. women- 18 mg/day, men - 8 mg/day  
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Recommended intake zinc   19-50 yrs of age women-8 mg/day, men- 110 mg/day  
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RDA Copper   19-50 yrs. 90 ug/day  
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RDA Vitamin B6 (pyridoxine)   19-50 yrs- 1.3 mg/day  
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RDA Folate (Folic Acid)   19 yrs or older- 400 ug/day  
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RDA Vitamin B12 (cobalamin)   19 yrs- 2.4 ug/day  
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RDA Vitamin K   19-50 yrs. women- 75 mg/day, men- 120 ug/day  
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RDA Vitamin C   19 yrs- women- 75 mg/day, men- 90 mg/day, smokers extra 35 mg more per day than RDA  
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RDA Calcium   19-50 yrs- 1000 mg/day, women 51 yrs- and older- 1200 mg/day, men 51-70 yrs- 1000 mg/day, 70 yrs and older- 1200 mg/day  
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RDA Phosphorus   19 yrs of age and older- 700 mg/day  
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RDA Magnesium   19-30 yrs- women-310 mg/day, men- 400 mg/day, 31 yrs n older- women-320 mg/day, men- 420 mg/day  
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RDA Fluoride   19 yrs n older- women- 3 mg/day, men- 4 mg/day  
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RDA Vitamin D   19-70 yrs.- 600 IU/day, based on the assumption that a person does not get adequate sun exposure, 71 yrs n older- 800 IU/day  
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Identify the contributions of three trace minerals to blood health   Erythrocytes, leukocytes, platelets  
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Erythrocytes (RBC) are   Cells that transport oxygen  
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Leukocytes (WBC) are   Key to our immune function. They defend against infection and the progression of cancer  
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Platelets are   Cell fragments that assist in the formation of blood clots and helps stop bleeding  
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Plasma is   Watery matrix of blood which the cells and platelets flow. Circulation of blood is critical to life, it transports oxygen and nutrients to our cells, removes carbon dioxide and other waste products generated from metabolism.  
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Micronutrients are required for what   Healthy blood  
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Trace mineral iron plays the leading role in   Enabling blood cells to transport oxygen  
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Most common deficiency in the world according to World Health Oranization   Iron deficiency  
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Trace mineral iron is needed ?   In very small amounts  
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2/3 iron in body is   Hemoglobin  
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Hemoglobin is   The oxygen carrying protein in our RBC  
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Hemoglobin molecule   4 polypeptide chains each with an iron containing heme group.  
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Blood stream is   Iron acts as a shuttle, picking up oxygen inhaled into the lungs, binding it during transport in RBC and then dropping it off again in body tissues.  
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Iron is also a component of   Myoglobin, Protein similar to hemoglobin but found in muscle cells.  
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Myoglobin is   Iron assists in the transport of oxygen into muscle cells.  
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Hemoglobin is a ?   Protein  
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Iron is also found in enzymes called   Cytochromes  
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Cytochromes are   Active in the metabolism of carbohydrates, fats, and proteins  
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Mitochondria   More than 12 of these iron requiring enzymes help produce energy, iron necessary for enzymes involved in DNA, synthesis, plays important role in cognitive development and immune health.  
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Iron part of an antioxidant enzyme system that assists in fighting what   Free radicals  
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Leukocytes (WBC)   Protect us from infection and illness  
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Platelets are   Cell fragments that assist in the formation of blood clots and help stop bleeding  
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Plasma is   Fluid portion of the blood, needed to maintain adequate blood volume so that the blood can flow easily throughout our body.  
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Hemoglobin is   Oxygen carrying protein in our RBC almost two-thirds of all the iron in our body is found in hemoglobin  
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Heme is   Iron containing protein similar to hemoglobin except that it is found in muscle cells  
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Myoglobin is    
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Prooxidant is   Substance that promotes oxidation and oxidative cell and tissue damage  
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What is responsible for prooxidant?   Liver and spleen and is a iron recycling program, which greatly reduces the body’s reliance on dietary iron.  
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What percentage of the iron released from hemoglobin breakdown is reused by the body.   85%  
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Heme is   Iron that is a part of hemoglobin and myoglobin found only in animal based foods, such as meat, fish, and poultry  
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Non-heme iron is   Form of iron that is not a part of hemoglobin or myoglobin, found in animal and plant based foods.  
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Meat factor is   Special factor found in meat, fish, and poultry that enhances the absorption of non heme iron.  
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Iron absorption is   Iron status- iron stores are high, amount of iron absorbed in the diet is low, iron absorption with poor iron status.  
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Stomach acid is   Adequate amounts of stomach acid are necessary for iron absorption . People with low levels of stomach acid have a decreased ability to absorb iron.  
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Bioavailability is   Degree to which the body can absorb and utilize any given nutrient  
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Anemia is   Without blood  
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Iron deficiency anemia is   Form of anemia that results from severe iron deficiency  
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Sickle Cell Anemia is   Genetic disorder in which the red blood cells have a sickle or “half moon” shape, and thalassemia- genetic disorder in which RBC are small and short lived.  
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Thalassemia is   Genetic disorder in which RBC are small and short lived  
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Hemorrhagic anemia is   Result from blood loss.  
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What are other anemia’s a result of   Micronutrients deficiencies. They can be classified according to the general way they alter the size and shape of the RBC  
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What causes microcytic anemia (small RBC)   Low iron, copper, and vitamin B6  
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What causes microcytic anemia (large RBC)   Inadequate intakes of folate or Vitamin B12.  
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Three functions of Zinc are   Enzymatic functions, structural functions and regulatory functions  
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Enzymatic functions are   Zinc is required for more than 300 different enzymes in the body. Without zinc, these enzymes can’t function zinc for digestion and metabolism and to synthesis the heme structure of hemoglobin. Zinc contributes to the the maintenance of blood health.  
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Structural function are   If proteins lose their shape, they lose their function. Zinc helps to stabilize the structure of proteins involved in gene expression, vision, antioxidant enzyme systems and immune function.  
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What can fight the common cold.   Zinc lozenges  
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Regulatory Functions are   Zinc helps regulate gene expression and thus the body functions that these genes control. Without zinc certain genes that help regulate cell division during fetal development are not expressed. After child is born growth is stunted.  
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What is increased during pregnancy, childhood and adolescence?   Zinc absorption  
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High non-heme iron intakes can?   Inhibit zinc absorption primary concern with iron supplements (non-heme)  
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What strongly inhibits zinc absorption   Phytates and fiber found in whole grains and beans  
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Zinc deficiency in the middle eastern men   Low consumption of meat and high consumption of beans and flat breads high in phytates.  
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The what added to leavened breads reduced the phytate content   Yeast  
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In an atom, the electrons orbiting around the nucleus have what kind of charge?   Negative  
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Which of the following statements is FALSE regarding free radicals?   Our body has no mechanism to combat free radicals  
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Which of the following diseases has not been linked to free radical damage? A. Arthritis B. Cancer C. Heart disease D. Type 1 diabetes   C. Heart disease  
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What water -soluble vitamin can regenerate vitamin E after it has been oxidized?   Vitamin C  
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What nutrient requires the MOST frequent consumption to assure adequate body stores?   Vitamin C  
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The spongy bone that is found within the ends of long bones is called   Trabecular  
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Bone cells that are responsible for bone resorption are called?   Osteoclasts  
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The average person will absorb no more than how many mg of calcium at one time?   500  
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A T-score +1 (plus 1) and -1(minus 1) on a DXA signifies   Normal bone density  
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If a healthy individual were to consume too much calcium from the diet, what would most likely happen?   Toxicity symptoms, including nausea and dizziness  
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Erythrocytes is   Red blood cells  
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Leukocytes are   White blood cells, key to our immune function  
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Platelets are   Cell fragments that assist in the formation of blood clots  
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Plasma is   The watery matrix of blood in which the cells and platelets flow.  
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