Nutrition Exam 5 – Flashcards

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question
Which of the following is a symptom of potassium deficiency? A. Extreme thirst B. Muscle weakness C. Profound sweating D. Lowered blood pressure E. Hypoglycemia
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B. Muscle weakness
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Almost all (99%) of the calcium in the body is used to A. provide energy for cells B. provide rigidity for the bones and teeth C. regulate the transmission of nerve impulses D. maintain the blood level of calcium within very narrow limits E. maintain muscle health and function
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B. provide rigidity for the bones and teeth
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What is calmodulin? A. calcium-binding protein B. drug that treats osteoporosis C. calcium supplement with high bioavailability D. form of calcium used in fortifying soy products E. drug that increases calcium availability
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A. calcium binding protein
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Which of the following foods are significant sources of oxalates? A. seeds and nuts B. processed cheeses C. fermented dairy products D. Spinach and sweet potatoes E. Cauliflower and cabbage
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D. Spinach and sweet potatoes
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The outer, hard shell of bone is called A. cortical bone B. dolomitic bone C. trabecular bone D. hydroxyl bone E. structural bone
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A. cortical bone
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Which of the following is a feature of magnesium in nutrition? A. toxicity is common in people taking diuretics B. high intakes interfere with stability of tooth enamel C. The amounts present in hard water are poorly utilized D. Average intakes from food are below recommendations E. There is no upper level for intake set for adults
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D. Average intakes from food are below reccomendations
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Which of the following is a characteristic of the trace minerals? A. deficiency sign common to many trace minerals is dermatitis B. The amounts in foods are dependent, in part, on soil composition C. Deficiencies are more difficult to recognize in children than in adults D. The amount of all trace minerals in the average person totals approximately 100 grams E. Deficiencies of trace minerals are virtually unknown, although toxicities are well documented.
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B. The amounts of foods are dependent, in part, on soil composition
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Which of the following is a characteristic of iron transport? A. Albumin is the major iron transport protein in the blood B. Transferrin in the blood carries iron to the bone marrow C. Hemochromatosis results from an inability to absorb and transport iron D. Ferritin functions by transporting iron from the spleen to the bone marrow E. Chelation is used to increase the bioavailability of iron.
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B. Transferrin in the blood carries iron to the bone marrow
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Which of the following is known to enhance iron absorption? A. Tea B. Coffee C. Foods containing vitamin C D. Foods containing vitamin E E. Milk
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C. Foods containing vitamin C
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What component of tea is responsible for its effect on iron absorption? A. Tannic acid B. Lactic acid C. Citric acid D. Ascorbic acid E. Acetic acid
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A. Tannic acid
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Which of the following is a characteristic of iron deficiency and behavior? A. Erythrocyte iron levels fall before mental alertness is affected B. Moderate iron deficiency promotes constipation C. Mild iron deficiency impairs energy metabolism and neurotransmitter synthesis D. Iron deficiency increases risk for infections that promote dysfunctional behavior E. Severe iron deficiency is associated with paradoxical hyperactivity
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C. Mild iron deficiency impairs energy metabolism and neurotransmitter sythesis
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What is the name given to the ingestion of nonnutritive substances? A. Pica B. Goiter C. Tetany D. Hemosiderosis E. Metallothionein
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A. Pica
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Which of the following is a major binding protein for zinc? A. Ligand B.Ferritin C. Hemosiderin D. Metallothionein E.Albumin
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D. Metallothionein
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What is the chief transport substance for zinc in the circulation? A. Albumin B. Metallothionein C. Carbonic anhydrase D. High-density lipoproteins E. Goitrogen
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A. Albumin
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Zinc content is highest in foods that also contain a large amount of A. fat. B. fiber. C. protein. D. complex carbohydrate. E. simple carbohydrate.
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C. protein.
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Which of the following conditions is known to lead to copper deficiency? A. Excess zinc B. Excess protein C. Insufficient iodine D. Insufficient calcium E. Cretinism
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A. Excess zinc
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Which of the following is a feature of iodide utilization? A. It is an integral part of pituitary thyroid-stimulating hormone. B. Ingestion of plants of the cabbage family stimulates iodide uptake. C. deficiency or a toxicity leads to enlargement of the thyroid gland. D. The amount in foods is unrelated to the amount of iodine present in the soil. E. Use of iodized salt has resulted in significant increases in iodine toxicity.
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C. deficiency or a toxicity leads to enlargement of the thyroid gland.
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Keshan disease risk increases with a deficiency of A. copper. B. selenium. C. manganese. D. molybdenum. E. rubidium.
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B. selenium.
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The rare genetic disorders Menkes disease and Wilson's disease result from abnormal utilization of A. iron. B. zinc. C. copper. D. manganese. E.fluoride.
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C. copper.
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What is the primary mechanism associated with the role of fluoride in prevention of dental caries? A. Fluoride increases calcium absorption, which increases crystal formation of teeth B. Decay is inhibited due to neutralization of organic acids produced by bacteria on the teeth C. Decay is reduced due to the inhibitory effects of fluoride on growth of bacteria on the teeth D. Fluoride becomes incorporated into the crystalline structure of teeth, making them less susceptible to decay E. Fluoride increases salivation which aids in the removal of bacteria and the foods needed to sustain bacterial growth
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D. Fluoride becomes incorporated into the crystalline structure of teeth, making them less susceptible to decay
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Which of the following is a feature of water and nutrition? A. Water intoxication is rare but can result in death B. Water losses from the body are highest through the feces C. Chronic high intakes increase the risk for bladder cancer D. Soft water has significant concentrations of magnesium E. Hard water contributes substantial potassium
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A. Water intoxication is rare but can result in death
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Which of the following is present in highest concentration in soft water? A. Sodium B. Calcium C. Manganese D. Phosphorus E. Magnesium
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A. Sodium
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Which of the following types of drinking water contains the lowest amount of minerals? A. Soft water B. Hard water C. Natural water D. Distilled water E. Carbonated water
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D. Distilled water
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Aldosterone and renin each function to promote A. electrolyte balance. B. retention of sodium. C. excretion of calcium. D. constriction of blood vessels. E. secretion of water.
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B. retention of sodium
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What is the major intracellular anion? A. Protein B. Sodium C. Phosphate D. Bicarbonate E. Bisphosphonate
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C. Phosphate
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What organ provides the major control for homeostasis of body fluids? A. Liver B. Heart C. Kidneys D. Skeletal muscle E. Pancreas
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C. Kidneys
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Among the following, which promotes constriction of blood vessels, resulting in elevation of blood pressure? A. Phytates B. Angiotensin C. Aldosterone D. Carbonic acid E. Magnesium
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B. Angiotensin
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What is the major intracellular cation? A. Sodium B. Calcium C. Phosphate D. Potassium E. Sulphate
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D. Potassium
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What is a chief function of carbonic acid in the body? A. Activates angiotensin B. Activates angiotensinogen C. Helps with gastric digestion D. Helps maintain acid-base balance E. Activates calcitonin
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D. Helps maintain acid-base balance
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Which of the following trace minerals is known to be involved in bone development? A. Tin B. Cobalt C. Silicon D. Barium E. Boron
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C. Silicon
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Your Aunt Thelma has been anemic for some time and was recently shown to be deficient in copper. Which of the following explains the association of copper and anemia?
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Copper is required for hemoglobin synthesis
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The concentration of electrolyte charges is measured in
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milliequivalents
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Which of the following is a symptom of potassium deficiency
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muscle weakness
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Which of the following is NOT among the characteristics of chloride in nutrition?
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the recommended intake has recently been set at 10 mg/kg body weight
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About how much iron would be provided by a balanced diet supplying 2000 calories?
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12 mg
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Which of the following ages (years) is typically associated with people having the densest bone?
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28
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At what age do adults normally begin to lose bone mass?
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30-40 years
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Approximately how many people worldwide are thought to be affected by iron-deficiency anemia?
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1.6 billion
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Zinc content is highest in foods that also contain a large amount of
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protein
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Which of the following is NOT a feature of zinc supplements?
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They reduce the incidence of goiter in developing countries
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How much water is contained in a loaf of bread?
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35% of the loaf
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What is hepcidin?
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A liver-derived hormone that helps regulate iron absorption and transport
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Which of the following is known to cause discolored enamel of teeth?
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Excessive fluoride in the water
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What percentage of the U.S. population have decayed, missing, or filled teeth?
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95
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Which of the following is a characteristic of iron transport?
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Transferrin in the blood carries iron to the bone marrow
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Which of the following is a feature of the minerals in nutrition?
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Once minerals enter the bloodstream, they remain in the body until excreted
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To serve its function in oxygen delivery to the body tissues, iron must interact closely with
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copper and vitamin C
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Approximately how much water (lbs) is found in a 134-lb person?
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80
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Which of the following is present in highest concentration in soft water?
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Sodium
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Which of the following is a characteristic of calcium supplement use?
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Taking them with a meal enhances absorption of calcium
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Sam has recently been diagnosed with high blood pressure. His doctor recommended adopting the DASH diet plan. Along with including more fruits, vegetables, and whole grains, he was also advised to reduce daily sodium intake to no more than 2000 mg. How much salt (g) would be allowed under Sam's restriction?
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5
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What is the oxygen-carrying protein of muscle cells?
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Myoglobin
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Which of the following is NOT among common side effects of taking a high-dose calcium supplement?
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increased iron absorption
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Which of the following is a feature of magnesium nutrition?
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Deficiency is associated with hypertension
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Among the following, which does NOT contain the MFP factor?
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Spinach
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Which of the following is a feature of the disorder hereditary hemochromatosis?
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It is the most common genetic disorder in the United States
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Anabolic drug treatments for osteoporosis work chiefly by
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enhancing osteoblast activity
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Which of the following represents the least likely cause for an abnormal blood calcium level?
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insufficient dietary intake
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Which of the following is a feature of iron absorption?
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It is higher in people with iron deficiency
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What percentage of the iron in a hamburger is nonheme iron?
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60
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Which of the following mechanisms is involved in the maintenance of fluid balance?
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osmosis
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The mechanism to maintain a neutral pH of body fluids is known as
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acid-base balance
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Which of the following beverages is considered the most dehydrating?
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alcohol
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A function of water in the body includes
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maintenance of body temperature
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The amount of water a person needs depends on
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air temperature
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Pharmaceutical diuretics are often prescribed to reduce
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hypertension
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Which of the following foods has the highest water content?
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potatoes
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The majority of fluid lost by the blood happens through
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urine
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A substance that increases the production and secretion of urine is known as a
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diuretic
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Consuming too much water can cause
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hyponatremia
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The majority of your daily water requirement should come from drinking
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plain water
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Consumption of alcohol can dehydrate the body by inhibiting the hormone
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ADH
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Thirst is a sensation that originates in the
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hypothalamus
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The percentage of water in the body is about __________ percent
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45 to 75
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Signs of dehydration include
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thirst
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The __________ detects high concentrations of salt in the blood and stimulates the pituitary gland to release ADH.
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hypothalamus
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Metabolic water refers to water
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produced during metabolic reactions in the body
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The main function of sweat is to
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cool the body
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The thirst center in the hypothalamus is stimulated when
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osmolality of blood increases
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Water shifts between intracellular (ICF) and extracellular (ECF) compartments happen due to
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osmotic gradient
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Sodium balance is maintained primarily by the
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kidneys
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Foods that have the highest sodium content include
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processed foods
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Which of the following is a role of magnesium?
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Involved in DNA synthesis
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Which of the following is the most abundant mineral in the body?
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calcium
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Bioavailability of calcium is highest from foods such as
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kale and broccoli
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Which amino acids contain sulfur and contribute to the tertiary structure of protein?
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Methionine and cysteine
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The AI for calcium is __________ milligrams of calcium daily.
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1,000
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Which of the following labeling terms for sodium means that there are less than 5 mg of sodium per serving in a product?
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sodium free
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The hormone aldosterone causes
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sodium reabsorption
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The best dietary source of phosphorus is
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chicken breast
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The best dietary source of magnesium is
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almonds
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Which of the following hormones stimulates absorption of calcium in the small intestine?
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calcitriol
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Peak bone mass will typically occur when a person is in his or her
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20s
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What is the recommended sodium intake (AI) for adults up to 51 years of age?
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1,500 mg/day
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The DASH diet is known to prevent
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hypertension
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The most common dietary source of chloride is
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table salt
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Maintaining optimal levels of calcium in blood is essential for
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muscle contractions
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Excessive intake of what mineral can lead to osteoporosis?
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sodium
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Foods that have the highest potassium content include
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potatoes and tomatoes
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Which of the following is the primary mineral in the hydroxyapatite crystals that provide strength and structure to bones and enamel on teeth?
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calcium
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Individuals who have the condition of pica may also develop a(n) __________ deficiency.
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iron
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Which of the following factors decreases the absorption of iron?
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excessive use of antacids
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The mineral __________ is an essential component of the thyroid hormone thyroxine.
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iodine
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Which of the following minerals acts as a protective factor in the development of dental caries?
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fluoride
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What substances bind iron and decrease its absorption?
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phytates in cereal grains
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Which of the following foods are good sources of dietary iron?
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meat
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__________ acts as temporary storage for iron in the intestine.
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Ferritin
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Which of the following is a good dietary source of copper?
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cocoa
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Which of the following is a good dietary source of iodine?
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saltwater fish
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Excess fluoride can cause
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fluorosis
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A genetic disorder that causes an accumulation of copper in the brain and liver, causing damage to those organs is known as
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Wilson's disease
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Iron is important in the body because it is
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a component of hemoglobin
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Which mineral is responsible for transporting oxygen in the blood?
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iron
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Adult females, aged 19 to 50, need __________ mg daily of dietary iron.
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18
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Which of the following minerals influences taste and smell perceptions?
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zinc
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The main function of chromium in the body is to
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improve insulin's effectiveness in glucose transport and metabolism
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Microcytic anemia is associated with the deficiency of
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iron
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The protein that stores zinc in the intestinal cells and regulates its bioavailability is
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metallothionine
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Which of the following best describes the fluoride content in bottled water?
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most likely insufficient
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Selenium is involved in
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antioxidant activities
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A person ingesting large amounts of thyroid antagonist substances is at high risk of developing
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simple goiter
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What does a DEXA scan measure?
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Bone density
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What is the chief transport substance for zinc in the circulation?
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albumin
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Which of the following is a feature of phosphorus?
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Involved in energy
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Aldosterone and renin each function to promote
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retention of sodium
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What formulation of zinc has been found somewhat effective in treating the symptoms of the common cold?
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Zinc gluconate
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The average daily loss of water via the kidneys, lungs, feces, and skin is approximately
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2.0 liters
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Among the following, which promotes constriction of blood vessels, resulting in elevation of blood pressure?
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Angiotensin
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Why are salt tablets generally not recommended for people engaged in physical activity?
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they can induce dehydration
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What is the ionic state of ferrous iron?
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+2
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What is the primary function of thyroid hormones?
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Control the rate of oxygen use by cells
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What is the name given to the ingestion of nonnutritive substances?
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Pica
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What is hydroxyapatite?
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the calcium-rich crystalline structure of teeth and bones
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Which of the following types of drinking water contains the lowest amount of minerals?
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Distilled water
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Which of the following is a feature of iron nutrition?
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On average, women do not eat enough iron-containing foods
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What is the primary function of the thyroid hormones?
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Control the rate of oxygen use by cells
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What percentage of the iron in a hamburger in nonheme iron?
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60
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Magnesium is known to be involved in all of the following EXCEPT
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production of red blood cells
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Which of the following is a function of trabecular bone?
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Storage site for calcium
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Sulfur is present in practically all
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proteins
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Fluoride deficiency is best known to lead to
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dental decay
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What is the major intracellular cation?
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Potassium
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Which of the following is a characteristic of iron absorption?
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Absorption of heme iron is about 50% higher than nonheme iron
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Which of the following is NOT a characteristic of alcohol and bone health?
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Even moderate alcohol intake reduces bone density
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Which of the following is a symptom of potassium deficiency?
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Muscle weakness
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Which of the following describes one aspect of iron toxicity?
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Among men in the United States, it is twice as common as iron-deficiency anemia
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Which of the following is NOT among the characteristics shared by iron and zinc?
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Transport in the blood is primarily handled by albumin
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Which of the following is NOT know to be a risk factor for osteoporosis in men?
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High BMI
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Which of the following is NOT among the characteristics of manganese in nutrition?
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absorption is inhibited by calcium supplements
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Which of the following is a characteristic of iron deficiency?
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People with anemia generally become fatigued only when they exert themselves
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Which of the following is a major binding protein for zinc?
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Ferritin
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Which of the following shows the highest bioavailability for calcium?
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broccoli
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What is a major function of hemosiderin?
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Protects the body against free iron release
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The approximate percentage of water in pizza is
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45
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Which of the following is a characteristic of iron nutrition?
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Iron deficiency and iron overload share some of the same signs and symptoms
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What term designates foods that contain nonnutrient substances that may provide health benefits beyond basic nutrition?
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functional foods
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A friend shows you a newspaper article titled "Magnesium's Role in ATP Synthesis." You explain that
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magnesium serves as a catalyst in the reaction that adds the lats phosphate to ATP
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Which of the following minerals functions primarily in reactions that consume oxygen?
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copper
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For optimal utilization of calcium supplements, it is best to take them several times a day, in doses up to
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500 mg
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Tiffany is a strict vegan and does not consume calcium-rich plant foods nor supplements of calcium. Which of the following is most responsible for maintaining her blood calcium levels in the normal range?
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parathyroid hormone
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Which of the following green vegetables shows the lowest bioavailability of calcium?
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spinach
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When a person loses fluid by sweating or bleeding, what minerals are lost in greatest quantity?
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sodium and chloride
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