Question 1

The leading cause of blindness among older Americans is macular degeneration. Eating a diet rich in can decrease the risk of this condition.

Accepted Answer

A)   retinoids
B)   vitamin E
C)   vitamin C
D)   carotenoidsE) A) and C)
F) A) and B)

Question 2

Which of the following would be the best source of vitamin D for a person following a vegan diet?

Accepted Answer

A)   Fish oil
B)   Vitamin D-fortified soy milk
C)   Spinach
D)   Whole grain productsE) B) and C)
F) A) and B)

Question 3

Vitamin D is converted to its active form by the

Accepted Answer

A)   liver and kidneys.
B)   bones.
C)   pancreas.
D)   skin.E) B) and C)
F) A) and D)

Question 4

Vitamin D regulates

Accepted Answer

A)   energy metabolism.
B)   fluid balance.
C)   oxidation and reduction reactions.
D)   blood calcium levels.E) B) and D)
F) B) and C)

Question 5

Which of the following body systems is particularly sensitive to choline status?

Accepted Answer

A)   Nervous system
B)   Immune system
C)   Digestive system
D)   Skeletal systemE) B) and D)
F) All of the above

Question 6

The B vitamins

Accepted Answer

A)   facilitate chemical reactions that yield energy from macronutrients.
B)   can be broken down to yield about 4 kcal per gram.
C)   provide strength and stability to bones.
D)   protect the cells from damage by free radicals.E) A) and C)
F) None of the above

Question 7

Which of the following is an example of a fat-soluble vitamin?

Accepted Answer

A)   Vitamin A
B)   Vitamin B-6
C)   Vitamin B-12
D)   RiboflavinE) B) and C)
F) A) and D)

Question 8

Consuming high doses of ________ can mask signs of a vitamin B-12 deficiency.

Accepted Answer

A)   folate
B)   vitamin K
C)   iron
D)   vitamin B-6E) None of the above
F) A) and B)

Question 9

Which of the following is best for preserving the vitamin content of foods?

Accepted Answer

A)   Exposure to light
B)   Cooking in water
C)   Flash freezing
D)   Addition of baking sodaE) B) and D)
F) B) and C)

Question 10

The vitamin required specifically in carbohydrate metabolism is

Accepted Answer

A)   folate
B)   niacin
C)   riboflavin
D)   thiaminE) B) and C)
F) B) and D)

Question 11

________ is a building block of vitamin D and other hormones.

Accepted Answer

A)   Cholesterol
B)   Hydroxyapatite
C)   Calcitriol
D)   EstrogenE) None of the above
F) A) and D)

Question 12

The following are some vitamin-like compounds found in our diets:

Accepted Answer

A)   quinone and ascorbic acid.
B)   alpha-tocopherol, thiamin, and ribonucleic acid.
C)   carnitine, inositol, taurine, and lipoic acid.
D)   pyridoxine, cobalamin, and retinoic acid.E) C) and D)
F) B) and D)

Question 13

Which of the following is true about the absorption, transport, and storage of fat-soluble vitamins?

Accepted Answer

A)   They enter the bloodstream directly from the small intestine.
B)   Fat in the digestive contents is not important for their absorption.
C)   Excessive intakes are readily excreted via the kidneys.
D)   They are stored in the liver and fatty tissue.E) None of the above
F) All of the above

Question 14

Vitamin B-12 is supplied almost entirely by

Accepted Answer

A)   animal products.
B)   vegetables and fruits.
C)   human intestinal bacteria.
D)   whole grain cereals and legumes.E) None of the above
F) All of the above

Question 15

Which of the B vitamins contains cobalt?

Accepted Answer

A)   Niacin
B)   Thiamin
C)   Vitamin B-6
D)   Vitamin B-12E) A) and B)
F) C) and D)

Question 16

Match the following terms with the descriptions below.
-Osteomalacia

Accepted Answer

A)  Muscle weakness, loss of appetite, and nerve degeneration due to thiamin deficiency
B)  Unhealthy red blood cells and neurological problems related to poor vitamin B-12 status
C)  Soft bones due to vitamin D deficiency during childhood
D)  Dry and damaged eyes due to vitamin A deficiency
E)  Soft bones due to vitamin D deficiency during adulthoodF) Inability to see in low light due to vitamin A deficiencyG) Bruising, bleeding, and poor wound healing due to vitamin C deficiencyH) Diarrhea, dermatitis, and dementia due to niacin deficiencyI) A) and G)
J) C) and E)

Question 17

Which fat-soluble vitamins are most toxic if consumed in excess amounts over long periods of time?

Accepted Answer

A)   Vitamins D and K
B)   Vitamins A and E
C)   Vitamins A and D
D)   Vitamins E and KE) A) and B)
F) B) and C)

Question 18

The nutrient that prevents beriberi is

Accepted Answer

A)   vitamin B-12.
B)   niacin.
C)   riboflavin.
D)   thiamin.E) C) and D)
F) None of the above

Question 19

The ability of the skin to synthesize vitamin D is decreased by

Accepted Answer

A)   the use of sunscreen.
B)   excessive dietary calcium intake.
C)   excessive dietary phosphorus intake.
D)   the use of a tanning bed.E) A) and B)
F) B) and C)

Question 20

Which of the following is true about the forms of vitamin A?

Accepted Answer

A)   Retinoids are found in plant foods.
B)   Carotenoids are found in animal foods.
C)   Carotenoids can be converted to retinoids.
D)   Retinoids can be converted to carotenoids.E) None of the above
F) A) and B)

Exam 8: Vitamins

Vitamin D is converted to its active form by the

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Which of the following is best for preserving the vitamin content of foods?

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Which fat-soluble vitamins are most toxic if consumed in excess amounts over long periods of time?

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Which of the following is true about the absorption, transport, and storage of fat-soluble vitamins?

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Which of the following would be the best source of vitamin D for a person following a vegan diet?

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Vitamin B-12 is supplied almost entirely by

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Which of the following is an example of a fat-soluble vitamin?

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The B vitamins

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Vitamin D regulates

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The ability of the skin to synthesize vitamin D is decreased by

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The leading cause of blindness among older Americans is macular degeneration. Eating a diet rich in can decrease the risk of this condition.

Correct AnswerverifiedShow Answer

Match the following terms with the descriptions below. -Osteomalacia

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The following are some vitamin-like compounds found in our diets:

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________ is a building block of vitamin D and other hormones.

Correct AnswerverifiedShow Answer

Which of the following is true about the forms of vitamin A?

Correct AnswerverifiedShow Answer

The nutrient that prevents beriberi is

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Which of the following body systems is particularly sensitive to choline status?

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Which of the B vitamins contains cobalt?

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Consuming high doses of ________ can mask signs of a vitamin B-12 deficiency.

Correct AnswerverifiedShow Answer

The vitamin required specifically in carbohydrate metabolism is

Correct AnswerverifiedShow Answer

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