Chapter 10

Red, dark meat is a good source of readily available iron called: A. nonheme iron B. heme iron C. red blood cells D. hemoglobin

B

Which of the following is true of iron sources and functions? A. the body cannot recycle iron for other uses B. heme iron is always better absorbed than nonheme iron C. the only dietary sources of iron are meat, fish, and poultry D. myoglobin and hemoglobin contain equal amounts of iron

B

Which of the following is true of iron-deficiency anemia? A. iron-deficiency anemia results in red blood cells that are larger than normal B. young women have a higher risk of anemia than women over 50 years of age C. iron is the only mineral deficiency that will impair hemoglobin synthesis D. the most common cause of anemia is poor iron absorption

B

Which salad would a vegetarian choose to maximize iron absorption? A. fresh fruit salad B. fresh strawberry and spinach salad C. tomato and mozzarella cheese salad D. carrot and raisin salad

B

Iron plays an important role in both hemoglobin and myoglobin, as it enables both protein the ability to: A. synthesize red blood cells B. synthesize DNA C. pick up and transport or store oxygen D. signal cells to take up oxygen

C

Iron-deficiency anemia is characterized by all of the following EXCEPT: A. fatigue B. slow childhood cognitive development C. development of small, pale red blood cells D. decreased susceptibility to infections

D

Most of the iron in the body is in the form of: A. nonheme iron B. hemoglobin C. hemochromatosis D. heme iron

D

Which of the following correctly matches the mineral with one of its functions? A. manganese- may enhance the function of insulin B. selenium- important for the metabolism of carbohydrates and amino acids C. chromium- a cofactor for only four enzymes D. fluoride- hardens tooth enamel

D

Which of the following is true of trace minerals? A. their absorption does not change when body stores are low B. toxicity is more likely with major minerals than with trace minerals C. all trace minerals can function as cofactors for enzymes D. their content in plant foods is strongly influenced by the mineral content of the soil where they are grown

D

Hemoglobin and myoglobin are similar in structure EXCEPT that myoglobin: A. contains only on heme group B. has a much larger protein chain C. contains a heme iron without the surrounding ring structure D. contains four heme groups

A

Their absorption of what mineral is enhanced by vitamin C? A. iron B. selenium C. copper D. zinc

A

What mineral is not included in children's multivitamin/mineral supplements because it is a major cause of unintentional poisoning deaths? A. iron B. iodine C. zinc D. selenium

A

Which of the following lists only essential trace elements? A. copper, manganese, selenium, iodine, molybdenum B. zinc, iron, manganese, fluoride, molybdenum C. boron, copper, iodine, selenium, manganese D. iron, zinc, magnesium, iodine, selenium

A

Which population is at LEAST risk for zinc deficiency? A. individuals eating a diet high in meat B. vegetarians C. elderly D. alcoholics

A

_______ is found in red blood cells, and ________ is found in muscle tissue A. hemoglobin; myoglobin B. heme iron; muscle iron C. heme group; myoglobin D. myoglobin; hemoglobin

A