Question 1

An enzyme in which zinc or copper is an integral part of its structure is classified as a(n)

Accepted Answer

A)  metalloenzyme.
B)  oxidoreductase.
C)  cytochromidase.
D)  metallothionase.

Question 2

What formulation of zinc has been found effective in treating the symptoms of the common cold?

Accepted Answer

A)  Zinc chelator
B)  Zinc gluconate
C)  Zinc plus ferrous iron
D)  Zinc plus copper salt

Question 3

In the body, lead is known to significantly interfere with utilization of all of the following minerals except

Accepted Answer

A)  iron.
B)  zinc.
C)  calcium.
D)  selenium.Question for Section 13.13 Closing Thoughts on the Nutrients

Question 4

Which of the following is not a feature of zinc supplements?

Accepted Answer

A)  They induce nausea and bad taste reactions when administered in zinc lozenges
B)  They reduce the incidence of goiter in developing countries
C)  They reduce the incidence of diarrhea-related deaths in children
D)  They reduce the incidence of pneumonia-related deaths in the elderly

Question 5

Iron overload is also known as

Accepted Answer

A)  ferrocyanosis.
B)  hemoglobinemia.
C)  hemochromatosis.
D)  metalloferrothionosis.

Question 6

Which of the following conditions is known to lead to copper deficiency?

Accepted Answer

A)  Excess zinc
B)  Excess protein
C)  Insufficient iodine
D)  Insufficient calcium

Question 7

Among the following, which does not contain the MFP factor?

Accepted Answer

A)  Tuna
B)  Spinach
C)  Hamburger
D)  Chicken leg

Question 8

Which of the following is not known to affect iron bioavailability from complete meals?

Accepted Answer

A)  Caffeine
B)  Phytates
C)  Vitamin C
D)  MFP factor

Question 9

What is a goitrogen?

Accepted Answer

A)  One of the hormones produced by the thyroid gland
B)  A substance that enhances absorption of dietary iodide
C)  A substance that interferes with the functioning of the thyroid gland
D)  A compound used to supplement salt as a way to increase iodide intake

Question 10

What is the Tolerable Upper Intake Level for iodine?

Accepted Answer

A)  200 µg
B)  450 µg
C)  1100 µg
D)  2000 µg

Question 11

A person with high blood levels of hepcidin responds by

Accepted Answer

A)  decreasing iron absorption.
B)  increasing iron absorption.
C)  decreasing zinc absorption.
D)  increasing zinc absorption.

Question 12

Which of the following is found in the first stage of iron deficiency?

Accepted Answer

A)  Iron stores decline, as assessed by serum ferritin
B)  Hemoglobin levels fall, as assessed by complete blood count
C)  Red blood cell count falls, as assessed by hematocrit count
D)  Hemoglobin synthesis declines, as assessed by erythrocyte protoporphyrin

Question 13

What fraction of the total iron content of a normal diet is heme iron?

Accepted Answer

A)  1/100
B)  1/10
C)  1/3
D)  1/2

Question 14

All of the following are known to reduce the absorption of iron except

Accepted Answer

A)  tea.
B)  coffee.
C)  sugars.
D)  phytates.

Question 15

Under normal circumstances, what is the average percentage of dietary iron that is absorbed?

Accepted Answer

A)  10
B)  18
C)  33
D)  60

Question 16

Which of the following nutrients enhances iron absorption from the intestinal tract?

Accepted Answer

A)  Biotin
B)  Calcium
C)  Vitamin D
D)  Vitamin C

Question 17

Approximately how much higher is the RDA for iron for a vegetarian woman of childbearing age compared with her nonvegetarian counterpart?

Accepted Answer

A)  33%
B)  80%
C)  150%
D)  200%

Question 18

How does vitamin C enhance iron absorption when consumed in the same meal?

Accepted Answer

A)  It activates transferrin
B)  It keeps iron in the reduced ferrous form
C)  It releases iron from the proteins in the stomach
D)  It complexes with iron and promotes mucosal transport

Question 19

You have just been hired by the World Health Organization to promote nutrition education and policies in a small country in Asia, whose population has a high prevalence of goiter.Which of the following policies would be the best to implement with respect to iodine status, cost, and efficiency?

Accepted Answer

A)  Fortify the salt with iodine
B)  Promote free iodine supplements for all who want them
C)  Educate the population to avoid all goitrogens in their diet
D)  Educate the population to spend more time at the beach as seawater, sea mist, and seafood are sources of iodine

Question 20

Which of the following is a major binding protein for zinc?

Accepted Answer

A)  Ligand
B)  Ferritin
C)  Hemosiderin
D)  Metallothionein

Exam 13: The Trace Minerals

Which of the following nutrients enhances iron absorption from the intestinal tract?

Correct AnswerverifiedShow Answer

Approximately how much higher is the RDA for iron for a vegetarian woman of childbearing age compared with her nonvegetarian counterpart?

Correct AnswerverifiedShow Answer

Which of the following is found in the first stage of iron deficiency?

Correct AnswerverifiedShow Answer

What is a goitrogen?

Correct AnswerverifiedShow Answer

Which of the following is a major binding protein for zinc?

Correct AnswerverifiedShow Answer

You have just been hired by the World Health Organization to promote nutrition education and policies in a small country in Asia, whose population has a high prevalence of goiter.Which of the following policies would be the best to implement with respect to iodine status, cost, and efficiency?

Correct AnswerverifiedShow Answer

What is the Tolerable Upper Intake Level for iodine?

Correct AnswerverifiedShow Answer

Iron overload is also known as

Correct AnswerverifiedShow Answer

An enzyme in which zinc or copper is an integral part of its structure is classified as a(n)

Correct AnswerverifiedShow Answer

A person with high blood levels of hepcidin responds by

Correct AnswerverifiedShow Answer

Among the following, which does not contain the MFP factor?

Correct AnswerverifiedShow Answer

What formulation of zinc has been found effective in treating the symptoms of the common cold?

Correct AnswerverifiedShow Answer

Under normal circumstances, what is the average percentage of dietary iron that is absorbed?

Correct AnswerverifiedShow Answer

Which of the following is not a feature of zinc supplements?

Correct AnswerverifiedShow Answer

In the body, lead is known to significantly interfere with utilization of all of the following minerals except

Correct AnswerverifiedShow Answer

All of the following are known to reduce the absorption of iron except

Correct AnswerverifiedShow Answer

Which of the following is not known to affect iron bioavailability from complete meals?

Correct AnswerverifiedShow Answer

Which of the following conditions is known to lead to copper deficiency?

Correct AnswerverifiedShow Answer

How does vitamin C enhance iron absorption when consumed in the same meal?

Correct AnswerverifiedShow Answer

What fraction of the total iron content of a normal diet is heme iron?

Correct AnswerverifiedShow Answer

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