Question 1

Why are people with iron overload at increased risk for infections?

Accepted Answer

A)  Excess tissue iron destroys vitamin C
B)  Iron-rich blood favors growth of bacteria
C)  Iron-rich blood impairs the immune system
D)  Excess tissue iron interferes with antibiotic functionE) C) and D)
F) All of the above

Question 2

What is hepcidin?

Accepted Answer

A)  A factor in meats that enhances iron absorption
B)  An intestinal mucosa protein that assists in iron turnover
C)  A substance in legumes that interferes with iron absorption
D)  A liver-derived hormone that helps regulate iron absorption and transportE) B) and C)
F) B) and D)

Question 3

Which of the following is an important function of selenium?

Accepted Answer

A)  Helps blood to clot
B)  Inhibits the formation of free radicals
C)  Stabilizes the alcohol content of beer
D)  Acts as a cross-linking agent in collagenE) A) and B)
F) C) and D)

Question 4

All of the following are characteristics of copper in nutrition except

Accepted Answer

A)  deficiency is rare.
B)  legumes are a rich source.
C)  absorption from foods is poor.
D)  absorption is reduced by ingestion of zinc supplements.E) A) and B)
F) A) and C)

Question 5

Absorption of iron from supplements is improved by taking them with

Accepted Answer

A)  tea.
B)  meat.
C)  milk.
D)  whole-grain bread.E) B) and C)
F) None of the above

Question 6

Which of the following is a feature of iron absorption?

Accepted Answer

A)  It is lower in people with iron toxicity
B)  It is higher in people with iron deficiency
C)  It is lower when iron is in the form of heme rather than non-heme
D)  It is higher in adults than children due to more mature intestinal functionE) None of the above
F) B) and C)

Question 7

All of the following are chief storage sites for surplus iron except the

Accepted Answer

A)  liver.
B)  spleen.
C)  muscle.
D)  bone marrow.E) C) and D)
F) None of the above

Question 8

What is the average lifespan of red blood cells?

Accepted Answer

A)  Two weeks
B)  One month
C)  Four months
D)  Six monthsE) B) and C)
F) A) and B)

Question 9

What is erythrocyte protoporphyrin?

Accepted Answer

A)  Iron chelating drug
B)  Hemoglobin precursor
C)  Indicator of iron toxicity
D)  Inherited iron-deficiency diseaseE) A) and B)
F) A) and D)

Question 10

Which of the following minerals is a cofactor in the formation of hemoglobin?

Accepted Answer

A)  Iodine
B)  Copper
C)  Sodium
D)  CalciumE) B) and C)
F) C) and D)

Question 11

What is the name given to the ingestion of nonnutritive substances?

Accepted Answer

A)  Pica
B)  Goiter
C)  Tetany
D)  HemosiderosisE) All of the above
F) A) and D)

Question 12

When eaten in the same meal, which of the following foods enhances the absorption of iron in legumes?

Accepted Answer

A)  Nuts
B)  Fiber
C)  Oranges
D)  Whole-grain breadsE) A) and C)
F) B) and D)

Question 13

What is the response of the thyroid gland to an iodine deficiency?

Accepted Answer

A)  Increase in its size to trap more iodine
B)  Increase in its size to trap more thyroxine
C)  Increased release of thyroid-stimulating hormone
D)  Decreased release of thyroid-stimulating hormoneE) None of the above
F) C) and D)

Question 14

How would the body typically respond to loss of blood from hemorrhage?

Accepted Answer

A)  More transferrin is produced to allow absorption and transport of more iron
B)  The average life of the red blood cell is increased in order to allow better tissue oxygenation
C)  Fewer iron storage proteins are produced, which increases the amount of iron available for synthesis of new red blood cells
D)  The liver and muscles release their supply of stored red blood cells, which compensates, in part, for the decrease in red blood cell concentration of the circulationE) A) and D)
F) B) and D)

Question 15

Which of the following is a feature of fluoride in nutrition?

Accepted Answer

A)  Most bottled waters are fluoridated
B)  A severe deficiency is known as fluorosis
C)  Fluorapatite refers to an increase in the desire to eat fluoride-rich foods
D)  A deficiency contributes to the most widespread health problem in the United StatesE) B) and C)
F) All of the above

Question 16

What mineral is critical to the synthesis of thyroxine?

Accepted Answer

A)  Iron
B)  Copper
C)  Iodine
D)  MagnesiumE) B) and D)
F) None of the above

Question 17

Which of the following foods provides iron in the most absorbable form?

Accepted Answer

A)  Rice
B)  Spinach
C)  Chicken
D)  Orange juiceE) None of the above
F) A) and D)

Question 18

What is the chief function of hemosiderin?

Accepted Answer

A)  Stores excess body iron
B)  Inhibits hemoglobin synthesis
C)  Enhances heme iron absorption
D)  Enhances nonheme iron absorptionE) A) and B)
F) None of the above

Question 19

What type of anemia results from iron deficiency?

Accepted Answer

A)  Hemolytic
B)  Megaloblastic
C)  Microcytic hypochromic
D)  Macrocytic hyperchromicE) B) and C)
F) A) and C)

Question 20

Which of the following may result from iodine deficiency?

Accepted Answer

A)  Gout
B)  Goiter
C)  Anemia
D)  HypertensionE) B) and D)
F) All of the above

Exam 13: The Trace Minerals

All of the following are characteristics of copper in nutrition except

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All of the following are chief storage sites for surplus iron except the

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Which of the following is an important function of selenium?

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Which of the following minerals is a cofactor in the formation of hemoglobin?

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Absorption of iron from supplements is improved by taking them with

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Which of the following foods provides iron in the most absorbable form?

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What is hepcidin?

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When eaten in the same meal, which of the following foods enhances the absorption of iron in legumes?

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What is the name given to the ingestion of nonnutritive substances?

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Which of the following is a feature of fluoride in nutrition?

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What mineral is critical to the synthesis of thyroxine?

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Why are people with iron overload at increased risk for infections?

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What is the chief function of hemosiderin?

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Which of the following may result from iodine deficiency?

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What is the average lifespan of red blood cells?

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What is erythrocyte protoporphyrin?

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Which of the following is a feature of iron absorption?

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What type of anemia results from iron deficiency?

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How would the body typically respond to loss of blood from hemorrhage?

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What is the response of the thyroid gland to an iodine deficiency?

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