Which of the following statements about iron is true?a Every molecule of hemoglobin contains one atom of iron.. b Iron is a component of hemoglobin, the oxygen-transport protein within r
Trang 1Chapter 12 Clicker Questions
Trang 2a) are essential for the transport of glucose, albumin, and many other solutes throughout
the body
b) lack a nucleus and mitochondria, and are filled
with hemoglobin, which is essential for oxygen transport
c) are involved in both non-specific and specific immunity
d) are produced in the liver, whereas leukocytes and platelets are produced in the bone
marrow
© 2017 Pearson Education, Inc.
Trang 3a) are essential for the transport of glucose, albumin, and many other solutes throughout
the body
b) lack a nucleus and mitochondria, and are filled with hemoglobin, which is
essential for oxygen transport.
c) are involved in both non-specific and specific immunity
d) are produced in the liver, whereas leukocytes and platelets are produced in the bone
marrow
© 2017 Pearson Education, Inc.
Trang 4Which of the following statements about iron is true?
a) Every molecule of hemoglobin contains one atom of iron
b) Iron is a component of hemoglobin, the oxygen-transport protein within red blood cells
c) Iron in myoglobin accounts for about one-third of total iron in the body
d) All of these statements are true
© 2017 Pearson Education, Inc.
Trang 5Which of the following statements about iron is true?
a) Every molecule of hemoglobin contains one atom of iron
b) Iron is a component of hemoglobin, the oxygen-transport protein within red blood
cells.
c) Iron in myoglobin accounts for about one-third of total iron in the body
d) All of these statements are true
© 2017 Pearson Education, Inc.
Trang 6Jenna 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) a bowl of iron-fortified cereal with cow's milk, and a cup of coffee
b) a bowl of iron-fortified cereal with soy milk, and a cup of tea
c) an iron-fortified breakfast bar with a glass of
orange juice
d) a cheese croissant and a diet coke
© 2017 Pearson Education, Inc.
Trang 7Jenna 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) a bowl of iron-fortified cereal with cow's milk, and a cup of coffee
b) a bowl of iron-fortified cereal with soy milk, and a cup of tea
c) an iron-fortified breakfast bar with a glass of orange juice
d) a cheese croissant and a diet coke
© 2017 Pearson Education, Inc.
Trang 8A classic sign of stage I iron-deficiency is
a) reduced levels of circulating ferritin
b) a significantly elevated total iron binding capacity
c) smaller than normal red blood cells that are pale in color
d) exhaustion, impaired cognitive functions, and increased risk for infection
© 2017 Pearson Education, Inc.
Trang 9A classic sign of stage I iron-deficiency is
a) reduced levels of circulating ferritin.
b) a significantly elevated total iron binding capacity
c) smaller than normal red blood cells that are pale in color
d) exhaustion, impaired cognitive functions, and increased risk for infection
© 2017 Pearson Education, Inc.
Trang 10Zinc plays an important role in
a) heme synthesis
b) maintaining the structural integrity of iron
c) preventing copper deficiency
d) reducing the risk for pernicious anemia
© 2017 Pearson Education, Inc.
Trang 11Zinc plays an important role in
a) heme synthesis.
b) maintaining the structural integrity of iron
c) preventing copper deficiency
d) reducing the risk for pernicious anemia
© 2017 Pearson Education, Inc.
Trang 12Good food sources of copper include
a) green, leafy vegetables and fortified grain products
b) green, leafy vegetables and dairy products
c) red, orange, and yellow fruits and vegetables
d) organ meats, seafood, nuts, and seeds
© 2017 Pearson Education, Inc.
Trang 13Good food sources of copper include
a) green, leafy vegetables and fortified grain products
b) green, leafy vegetables and dairy products
c) red, orange, and yellow fruits and vegetables
d) organ meats, seafood, nuts, and seeds.
© 2017 Pearson Education, Inc.
Trang 14The physiologic function most closely associated with vitamin K is
a) synthesis of heme
b) blood clotting
c) formation of the embryonic neural tube
d) maintenance of the myelin sheath
© 2017 Pearson Education, Inc.
Trang 15The physiologic function most closely associated with vitamin K is
a) synthesis of heme
b) blood clotting.
c) formation of the embryonic neural tube
d) maintenance of the myelin sheath
© 2017 Pearson Education, Inc.
Trang 16Vitamin B6, folate, and vitamin B12 are all required for
a) the formation of the porphyrin rings in heme
b) the function of platelets
c) erythropoiesis
d) hemochromatosis
© 2017 Pearson Education, Inc.
Trang 17Vitamin B6, folate, and vitamin B12 are all required for
a) the formation of the porphyrin rings in heme
b) the function of platelets
c) erythropoiesis.
d) hemochromatosis
© 2017 Pearson Education, Inc.
Trang 18Which of the following cells produce antibodies involved in specific immune responses?
Trang 19Which of the following cells produce antibodies involved in specific immune responses?
Trang 20A sensitive indicator of reduced nutritional status is
a) nausea and vomiting
b) fatigue and weakness
c) inflammation
d) decreased immunocompetence
© 2017 Pearson Education, Inc.
Trang 21A sensitive indicator of reduced nutritional status is
a) nausea and vomiting
b) fatigue and weakness
c) inflammation
d) decreased immunocompetence.
© 2017 Pearson Education, Inc.