Question 1

Niacin supplements:

Accepted Answer

A)  are commonly used in the US since niacin deficiency is a public health concern.
B)  provide an essential energy boost.
C)  may decrease LDL cholesterol and increase HDL cholesterol.
D)  are associated with an increase in heart attacks.

Question 2

Which is the FALSE statement regarding vitamin C?

Accepted Answer

A)  Vitamin C may decrease the duration of the common cold.
B)  People prone to developing certain types of kidney stones should avoid vitamin C supplementation.
C)  Vitamin C is efficiently stored in the liver,so deficiency symptoms take weeks or months to develop.
D)  Vitamin C supplements are unlikely to cause toxicity.

Question 3

The RDA for B6 in adults ____________ with aging.

Accepted Answer

A)  increases
B)  decreases
C)  stays the same
D)  increases for males but decreases for females

Question 4

Which group of people is most at risk for developing thiamin deficiency?

Accepted Answer

A)  Tobacco users
B)  Endurance athletes
C)  Older adults
D)  Chronic alcoholics

Question 5

The role of folate in DNA synthesis makes it particularly important in:

Accepted Answer

A)  lipid synthesis.
B)  rapidly dividing cells.
C)  nerve cells.
D)  old age.

Question 6

Which is the FALSE statement regarding biotin?

Accepted Answer

A)  Biotin functions in the metabolism of some amino acids.
B)  An RDA for biotin has not been determined.
C)  Biotin is produced by enzymes in epithelial cells that line the small intestine.
D)  People on tube feedings may become deficient.

Question 7

Which of the following is NOT recognized as a major function of vitamin C in the body?

Accepted Answer

A)  Formation of collagen
B)  Facilitating release of energy from glucose
C)  Protection against damage from free radicals
D)  Enhancing iron absorption

Question 8

Which statement is NOT true?

Accepted Answer

A)  Vitamins provide energy.
B)  Deficiency of a fat-soluble vitamin is less likely than of a typical water-soluble vitamin.
C)  Vitamins are necessary in many biochemical reactions in the body.
D)  Vitamin deficiencies are rare in the United States.

Question 9

A primary function of thiamin is to:

Accepted Answer

A)  increase iron incorporation into hemoglobin.
B)  regulate cell differentiation.
C)  promote blood clotting.
D)  facilitate the production of energy from glucose. D

Question 10

Which statement regarding fortification of foods in the U.S.is NOT true?

Accepted Answer

A)  Fortification is always regulated by the FDA.
B)  Fortification can be an arbitrary act of the food manufacturer.
C)  Fortification can lead to nutrient imbalances and toxicities.
D)  Fortification of juice can help individuals meet their daily calcium requirement.

Question 11

Biotin is tightly bound by avidin,which prevents absorption of the vitamin.Avidin is commonly found in:

Accepted Answer

A)  egg whites.
B)  kidney beans.
C)  peanuts.
D)  spinach.

Question 12

Which statement concerning vitamins is incorrect?

Accepted Answer

A)  Vitamins are organic compounds.
B)  If a vitamin is not provided by the diet,the body will synthesize it.
C)  The vitamin content of a food may be affected by cooking and processing.
D)  Vitamins are essential for growth,reproduction and health.

Question 13

Vitamin C deficiency causes:

Accepted Answer

A)  bleeding gums.
B)  hemolysis.
C)  pernicious anemia.
D)  megaloblastic anemia.

Question 14

Vitamin B6 status is affected by all of the following EXCEPT:

Accepted Answer

A)  the amount of fat in the diet.
B)  oral contraceptives.
C)  exposure of food to heat and light.
D)  alcohol ingestion.

Question 15

Absorption of vitamin B12 is dependent upon all of the following EXCEPT:

Accepted Answer

A)  adequate stomach acid.
B)  pepsin.
C)  intrinsic factor.
D)  amylase. D

Question 16

Another name for vitamin B6 is:

Accepted Answer

A)  pantothenic acid.
B)  biotin.
C)  pyruvate.
D)  pyridoxine.

Question 17

Riboflavin is most easily destroyed when exposed to:

Accepted Answer

A)  light.
B)  vitamin C.
C)  oxygen.
D)  acid.

Question 18

Pellagra occurs when _________ is the staple grain in the diet and the diet does not provide a mixture of different foods.

Accepted Answer

A)  corn
B)  wheat
C)  rice
D)  barley A

Question 19

The process of adding nutrients to foods is called:

Accepted Answer

A)  enrichment.
B)  fortification.
C)  milling.
D)  supplementation.

Question 20

Which statement about choline is correct?

Accepted Answer

A)  It has no identified,important roles in normal homeostasis.
B)  It is classified as a vitamin since it cannot be synthesized in the body.
C)  Deficiency causes kidney problems.
D)  There is an established UL for choline intake due to toxicity symptoms.

Exam 8: The Water-Soluble Vitamins

Niacin supplements:

Correct AnswerverifiedShow Answer

Which is the FALSE statement regarding vitamin C?

Correct AnswerverifiedShow Answer

The RDA for B6 in adults ____________ with aging.

Correct AnswerverifiedShow Answer

Which group of people is most at risk for developing thiamin deficiency?

Correct AnswerverifiedShow Answer

The role of folate in DNA synthesis makes it particularly important in:

Correct AnswerverifiedShow Answer

Which is the FALSE statement regarding biotin?

Correct AnswerverifiedShow Answer

Which of the following is NOT recognized as a major function of vitamin C in the body?

Correct AnswerverifiedShow Answer

Which statement is NOT true?

Correct AnswerverifiedShow Answer

A primary function of thiamin is to:

Correct AnswerverifiedD

Which statement regarding fortification of foods in the U.S.is NOT true?

Correct AnswerverifiedShow Answer

Biotin is tightly bound by avidin,which prevents absorption of the vitamin.Avidin is commonly found in:

Correct AnswerverifiedShow Answer

Which statement concerning vitamins is incorrect?

Correct AnswerverifiedShow Answer

Vitamin C deficiency causes:

Correct AnswerverifiedShow Answer

Vitamin B6 status is affected by all of the following EXCEPT:

Correct AnswerverifiedShow Answer

Absorption of vitamin B12 is dependent upon all of the following EXCEPT:

Correct AnswerverifiedD

Another name for vitamin B6 is:

Correct AnswerverifiedShow Answer

Riboflavin is most easily destroyed when exposed to:

Correct AnswerverifiedShow Answer

Pellagra occurs when _________ is the staple grain in the diet and the diet does not provide a mixture of different foods.

Correct AnswerverifiedA

The process of adding nutrients to foods is called:

Correct AnswerverifiedShow Answer

Which statement about choline is correct?

Correct AnswerverifiedShow Answer

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The RDA for B₆in adults ____________ with aging.

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D

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Vitamin B₆ status is affected by all of the following EXCEPT:

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Absorption of vitamin B₁₂ is dependent upon all of the following EXCEPT:

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D

Another name for vitamin B₆ is:

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A

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