Chapter 10 Summative quiz

Which of the following is true of zinc? Excess zinc can decrease copper absorption. It binds to most proteins in the body. All of its functions involve it acting as a cofactor for enzymes. Grains are the most reliable food sources of zinc.

Excess zinc can decrease copper absorption.

Which of the following is true of iron sources and functions? Heme iron is always better absorbed than nonheme iron. The only dietary sources of iron are meat, fish, and poultry. Myoglobin and hemoglobin contain equal amounts of iron. The body cannot recycle iron for other uses.

Heme iron is always better absorbed than nonheme iron.

Which of the following is true of iodine? The majority of iodine in the American diet is provided by seafood. Iodine has many well-established roles in the body. Iodine toxicity does not impair brain development and function. Iodine deficiency can result in goiter.

Iodine deficiency can result in goiter.

Which of the following is TRUE about the regulation of thyroid hormone production and its function? Low levels of thyroid hormone can lead to increased metabolic rate. Goiter is caused only by low levels of iodine. Thyroid stimulating hormone is produced by the hypothalamus. It regulates the synthesis of numerous proteins.

It regulates the synthesis of numerous proteins.

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

Their content in plant foods is strongly influenced by the mineral content of the soil where they are grown.

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

Young women have a higher risk of anemia than women over 50 years of age.

Which of the following foods offers the greatest amount of zinc per serving? quinoa almonds black beans cashews

cashews

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

copper, manganese, selenium, iodine, molybdenum

Iodine deficiency during pregnancy can result in all of the following EXCEPT: development of a goiter and hypothyroidism. development of cretinism in the fetus if iodine deficiency during pregnancy is severe. adverse effects on brain development and growth of the developing fetus. decrease in infant mortality.

decrease in infant mortality.

Which of the following does NOT decrease the absorption of nonheme iron? phytates calcium polyphenols decreased iron stores

decreased iron stores

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

decreased susceptibility to infections.

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

fluoride—hardens tooth enamel

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

fresh strawberry and spinach salad

Which food is likely to contain very little iodine? fruit milk egg cod

fruit

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

individuals eating a diet high in meat

Which of the following does NOT function as an enzyme cofactor? manganese selenium iodine copper

iodine

The absorption of what mineral is enhanced by vitamin C? copper iron selenium zinc

iron

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

iron

Which of the following minerals is NOT involved in antioxidant functions? molybdenum copper iron selenium

molybdenum

A deficiency of what mineral can increase the likelihood of developing a vitamin E deficiency? selenium iron zinc copper

selenium