Question 1

Which of the following statements about Keshan disease is FALSE?

Accepted Answer

A) It occurs in areas of China where the soil is very low in selenium. 
B) It causes an enlarged heart and poor heart function. 
C) Middle aged men are most at risk. 
D) A virus appears to be involved. 
A) It occurs in areas of China where the soil is very low in selenium. 
B) It causes an enlarged heart and poor heart function. 
C) Middle aged men are most at risk. 
D) A virus appears to be involved.

Question 2

Why is it important for iron to be in the ferrous form in the digestive tract?

Accepted Answer

A) The conversion of ferrous iron to ferric iron,which occurs in the acidic environment of the stomach,renders the iron more soluble and more easily absorbed in the small intestine. 
B) The ferrous form of iron binds more readily to ferritin and is easily absorbed bound to this protein. 
C) The conversion of ferric iron to ferrous iron,which occurs in the acidic environment of the stomach,renders the iron more soluble and more easily absorbed in the small intestine. 
D) The ferric form of iron binds more readily to transferrin and easily enters the blood in this form. 
A) The conversion of ferrous iron to ferric iron,which occurs in the acidic environment of the stomach,renders the iron more soluble and more easily absorbed in the small intestine. 
B) The ferrous form of iron binds more readily to ferritin and is easily absorbed bound to this protein. 
C) The conversion of ferric iron to ferrous iron,which occurs in the acidic environment of the stomach,renders the iron more soluble and more easily absorbed in the small intestine. 
D) The ferric form of iron binds more readily to transferrin and easily enters the blood in this form.

Question 3

Iodine deficiency during childhood and adolescence causes which condition?

Accepted Answer

A) premature baldness. 
B) impaired mental function. 
C) cancer risk in later life. 
D) sudden death. 
A) premature baldness. 
B) impaired mental function. 
C) cancer risk in later life. 
D) sudden death.

Question 4

What is the criterion of adequacy used to determine the RDA for iodine in adults?

Accepted Answer

A) Enough iodine to maintain normal levels in the urine 
B) Enough iodine to maintain thyroid function 
C) Enough iodine to maintain normal mental function. 
D) Enough iodine to counteract common goitrogens. 
A) Enough iodine to maintain normal levels in the urine 
B) Enough iodine to maintain thyroid function 
C) Enough iodine to maintain normal mental function. 
D) Enough iodine to counteract common goitrogens.

Question 5

Which is NOT an adequate source of nonheme iron?

Accepted Answer

A) apples. 
B) enriched white rice. 
C) garbanzo beans. 
D) spinach. 
A) apples. 
B) enriched white rice. 
C) garbanzo beans. 
D) spinach.

Question 6

Which of the following statements regarding copper absorption is TRUE?

Accepted Answer

A) Zinc promotes the absorption of copper. 
B) The majority of injected copper is absorbed. 
C) Vitamin C enhances copper absorption. 
D) By inhibiting zinc absorption,phytates may enhance the absorption of copper. 
A) Zinc promotes the absorption of copper. 
B) The majority of injected copper is absorbed. 
C) Vitamin C enhances copper absorption. 
D) By inhibiting zinc absorption,phytates may enhance the absorption of copper.

Question 7

What is the recommended fluoride concentration in the Canadian water supply

Accepted Answer

A) 0.7-1.2 parts per million (ppm). 
B) lower for warmer climates,where more water is consumed. 
C) higher for colder climates,where less water is consumed. 
D) All of the above answer choices are correct. 
A) 0.7-1.2 parts per million (ppm). 
B) lower for warmer climates,where more water is consumed. 
C) higher for colder climates,where less water is consumed. 
D) All of the above answer choices are correct.

Question 8

What role does chromium play in the body?

Accepted Answer

Chromium is involved in carboh

Question 9

What factors influence copper absorption into the body?

Accepted Answer

Copper absorption is

Question 10

What is the term used to describe proteins containing selenium as a component of their amino acids?

Accepted Answer

A) seleno-amino acids. 
B) superoxide dismutase. 
C) selenoproteins. 
D) selenoenzymes. 
A) seleno-amino acids. 
B) superoxide dismutase. 
C) selenoproteins. 
D) selenoenzymes.

Question 11

Why must copper be bound to proteins in the blood?

Accepted Answer

A) To prevent accumulation of copper in tissue. 
B) To promote the transport of copper to the liver. 
C) To reduce the pro-oxidant activity of copper 
D) To ensure copper is available for bile synthesis 
A) To prevent accumulation of copper in tissue. 
B) To promote the transport of copper to the liver. 
C) To reduce the pro-oxidant activity of copper 
D) To ensure copper is available for bile synthesis

Question 12

What is the criterion of adequacy used to determine the EAR and RDA for selenium?

Accepted Answer

A) The amount of selenium that maximizes the activity of glutathione peroxidase 
B) The amount consumed by a healthy population. 
C) The amount that prevents Keshan disease. 
D) The amount that prevents hair loss. 
A) The amount of selenium that maximizes the activity of glutathione peroxidase 
B) The amount consumed by a healthy population. 
C) The amount that prevents Keshan disease. 
D) The amount that prevents hair loss.

Question 13

A high dose nutrient supplement is given which blocks the absorption of copper.The reduced absorption of copper is desirable in the treatment of a disease.Which disease?

Accepted Answer

A) Wilson's disease 
B) Acrodermatitis enteropathica 
C) Common cold 
D) Xeropthalmia 
A) Wilson's disease 
B) Acrodermatitis enteropathica 
C) Common cold 
D) Xeropthalmia

Question 14

Iron stores that are higher than normal but not at a toxic level may be associated with which of the following?

Accepted Answer

A) an increased risk of cancer and heart disease. 
B) increased stamina and endurance. 
C) an improved immune system. 
D) anemia. 
A) an increased risk of cancer and heart disease. 
B) increased stamina and endurance. 
C) an improved immune system. 
D) anemia.

Question 15

What are common body functions of manganese?

Accepted Answer

Manganese-containing enzymes are involve

Question 16

Which of the following populations is at high risk for iron deficiency?

Accepted Answer

A) small children 
B) women of childbearing age 
C) pregnant women 
D) All of the above answer choices are correct. 
A) small children 
B) women of childbearing age 
C) pregnant women 
D) All of the above answer choices are correct.

Question 17

What role does soil selenium content play on Keshan disease?

Accepted Answer

Regions with low soil contents of seleni

Question 18

How does the body conserve iron?

Accepted Answer

Ferritin is the primary storage protein

Question 19

What is the relationship between high intakes of zinc and the bioavailability of copper?

Accepted Answer

A) There is no relationship between the intake of zinc and the bioavailability of copper. 
B) High intakes of zinc increase levels of the protein metallothionein and metallothionein binds copper,reducing copper's bioavailability. 
C) High intakes of zinc increase levels of the protein metallothionein and metallothionein transports copper in the blood. 
D) High intakes of zinc increase levels of the protein metallothionein and metallothionein binds copper,increasing copper's bioavailability. 
A) There is no relationship between the intake of zinc and the bioavailability of copper. 
B) High intakes of zinc increase levels of the protein metallothionein and metallothionein binds copper,reducing copper's bioavailability. 
C) High intakes of zinc increase levels of the protein metallothionein and metallothionein transports copper in the blood. 
D) High intakes of zinc increase levels of the protein metallothionein and metallothionein binds copper,increasing copper's bioavailability.

Question 20

How does a diet high in iron affect zinc status in the body? How does a high-zinc diet affect copper status?

Accepted Answer

Zinc and iron absorption are b

Exam 12: The Trace Elements

Which of the following statements about Keshan disease is FALSE?

Why is it important for iron to be in the ferrous form in the digestive tract?

Iodine deficiency during childhood and adolescence causes which condition?

What is the criterion of adequacy used to determine the RDA for iodine in adults?

Which is NOT an adequate source of nonheme iron?

Which of the following statements regarding copper absorption is TRUE?

What is the recommended fluoride concentration in the Canadian water supply

What role does chromium play in the body?

What factors influence copper absorption into the body?

What is the term used to describe proteins containing selenium as a component of their amino acids?

Why must copper be bound to proteins in the blood?

What is the criterion of adequacy used to determine the EAR and RDA for selenium?

A high dose nutrient supplement is given which blocks the absorption of copper.The reduced absorption of copper is desirable in the treatment of a disease.Which disease?

Iron stores that are higher than normal but not at a toxic level may be associated with which of the following?

What are common body functions of manganese?

Which of the following populations is at high risk for iron deficiency?

What role does soil selenium content play on Keshan disease?

How does the body conserve iron?

What is the relationship between high intakes of zinc and the bioavailability of copper?

How does a diet high in iron affect zinc status in the body? How does a high-zinc diet affect copper status?

Nutrition: Food for Health

Nutrition Guidelines: Applying the Science of Nutrition

Digestion, Absorption, and Metabolism

Carbohydrates: Sugars, Starches, and Fibre

Lipids

Proteins and Amino Acids

Energy Balance and Weight Management

A: the Water-Soluble Vitamins

The Fat-Soluble Vitamins

Water and the Electrolytes

Major Minerals and Bone Health

Nutrition and Physical Activity

Nutrition During Pregnancy and Lactation

Nutrition From Infancy to Adolescence

Nutrition and Aging: the Adult Years

Food Safety

World Hunger and Malnutrition

Focus 1: Focus on Beyond the Basics

Focus 2: Focus on Alcohol

Focus 3: Focus on Obesity, Metabolism, and Disease Risk

Focus 4: Focus on Phytochemicals

Focus5:focus on Natural Health Products

Focus 6: Focus on Integrating Nutrient Function in the Body

Focus 7: Focus on Eating Disorders

Focus 8: Focus on Biotechnology

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