1. Chapter 12: Nutrients Involved in Blood Health and Immunity
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2. Erythrocytes
are essential for the transport of glucose, albumin, and many other solutes throughout the body.
lack a nucleus and mitochondria, and are filled with hemoglobin, which is essential for oxygen transport.
are involved in both non-specific and specific immunity.
are produced in the liver, whereas leukocytes and platelets are produced in the bone marrow.
Answer: b) lack a nucleus and mitochondria, and are filled with hemoglobin, which is essential for oxygen transport.
© 2017 Pearson Education, Inc.

3. Erythrocytes
are essential for the transport of glucose, albumin, and many other solutes throughout the body.
lack a nucleus and mitochondria, and are filled with hemoglobin, which is essential for oxygen transport.
are involved in both non-specific and specific immunity.
are produced in the liver, whereas leukocytes and platelets are produced in the bone marrow.
Answer: b) lack a nucleus and mitochondria, and are filled with hemoglobin, which is essential for oxygen transport.
© 2017 Pearson Education, Inc.

4. Which of the following statements about iron is true?
Every molecule of hemoglobin contains one atom of iron.
Iron is a component of hemoglobin, the oxygen-transport protein within red blood cells.
Iron in myoglobin accounts for about one-third of total iron in the body.
All of these statements are true.
Answer: b) Iron is a component of hemoglobin, the oxygen-transport protein within red blood cells.
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5. Which of the following statements about iron is true?
Every molecule of hemoglobin contains one atom of iron.
Iron is a component of hemoglobin, the oxygen-transport protein within red blood cells.
Iron in myoglobin accounts for about one-third of total iron in the body.
All of these statements are true.
Answer: b) Iron is a component of hemoglobin, the oxygen-transport protein within red blood cells.
© 2017 Pearson Education, Inc.

6. Jenna is an ovo-lacto vegetarian concerned about her iron intake
Jenna is an ovo-lacto vegetarian concerned about her iron intake. From which of the following breakfasts is she likely to absorb the greatest percentage of iron?
a bowl of iron-fortified cereal with cow's milk, and a cup of coffee
a bowl of iron-fortified cereal with soy milk, and a cup of tea
an iron-fortified breakfast bar with a glass of orange juice
a cheese croissant and a diet coke
Answer: c) an iron-fortified breakfast bar with a glass of orange juice
© 2017 Pearson Education, Inc.

7. Jenna is an ovo-lacto vegetarian concerned about her iron intake
Jenna is an ovo-lacto vegetarian concerned about her iron intake. From which of the following breakfasts is she likely to absorb the greatest percentage of iron?
a bowl of iron-fortified cereal with cow's milk, and a cup of coffee
a bowl of iron-fortified cereal with soy milk, and a cup of tea
an iron-fortified breakfast bar with a glass of orange juice
a cheese croissant and a diet coke
Answer: c) an iron-fortified breakfast bar with a glass of orange juice
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8. A classic sign of stage I iron-deficiency is
reduced levels of circulating ferritin.
a significantly elevated total iron binding capacity.
smaller than normal red blood cells that are pale in color.
exhaustion, impaired cognitive functions, and increased risk for infection.
Answer: a) reduced levels of circulating ferritin.
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9. A classic sign of stage I iron-deficiency is
reduced levels of circulating ferritin.
a significantly elevated total iron binding capacity.
smaller than normal red blood cells that are pale in color.
exhaustion, impaired cognitive functions, and increased risk for infection.
Answer: a) reduced levels of circulating ferritin.
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10. Zinc plays an important role in
heme synthesis.
maintaining the structural integrity of iron.
preventing copper deficiency.
reducing the risk for pernicious anemia.
Answer: a) heme synthesis.
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11. Zinc plays an important role in
heme synthesis.
maintaining the structural integrity of iron.
preventing copper deficiency.
reducing the risk for pernicious anemia.
Answer: a) heme synthesis.
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12. Good food sources of copper include
green, leafy vegetables and fortified grain products.
green, leafy vegetables and dairy products.
red, orange, and yellow fruits and vegetables.
organ meats, seafood, nuts, and seeds.
Answer: d) organ meats, seafood, nuts, and seeds.
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13. Good food sources of copper include
green, leafy vegetables and fortified grain products.
green, leafy vegetables and dairy products.
red, orange, and yellow fruits and vegetables.
organ meats, seafood, nuts, and seeds.
Answer: d) organ meats, seafood, nuts, and seeds.
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14. The physiologic function most closely associated with vitamin K is
synthesis of heme.
blood clotting.
formation of the embryonic neural tube.
maintenance of the myelin sheath.
Answer: b) blood clotting.
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15. The physiologic function most closely associated with vitamin K is
synthesis of heme.
blood clotting.
formation of the embryonic neural tube.
maintenance of the myelin sheath.
Answer: b) blood clotting.
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16. Vitamin B6, folate, and vitamin B12 are all required for
the formation of the porphyrin rings in heme.
the function of platelets.
erythropoiesis.
hemochromatosis.
Answer: c) erythropoiesis.
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17. Vitamin B6, folate, and vitamin B12 are all required for
the formation of the porphyrin rings in heme.
the function of platelets.
erythropoiesis.
hemochromatosis.
Answer: c) erythropoiesis.
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18. Which of the following cells produce antibodies involved in specific immune responses?
plasma cells
NK cells
macrophages
neutrophils
Answer: a) plasma cells
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19. Which of the following cells produce antibodies involved in specific immune responses?
plasma cells
NK cells
macrophages
neutrophils
Answer: a) plasma cells
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20. A sensitive indicator of reduced nutritional status is
nausea and vomiting.
fatigue and weakness.
inflammation.
decreased immunocompetence.
Answer: d) decreased immunocompetence.
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21. A sensitive indicator of reduced nutritional status is
nausea and vomiting.
fatigue and weakness.
inflammation.
decreased immunocompetence.
Answer: d) decreased immunocompetence.
© 2017 Pearson Education, Inc.