Question 1

The primary function of vitamin C in cellular metabolism is to

Accepted Answer

A)   synthesize collagen.
B)   add hydroxyl groups to the amino acid proline.
C)   act as nonspecific reducing agent (electron donor) .
D)   maintain iron in its reduced form in the formation of collagen.

Question 2

The coenzyme form of riboflavin is

Accepted Answer

A)   TPP.
B)   ATP.
C)   FAD.
D)   NAD.

Question 3

Thiamin should be given to an alcoholic patient who has

Accepted Answer

A)   pellagra.
B)   Wernicke-Korsakoff syndrome.
C)   pernicious anemia.
D)   scurvy.

Question 4

Bright yellow urine usually is indicative that someone is supplementing with

Accepted Answer

A)   niacin.
B)   Vitamin A.
C)   vitamin K.
D)   riboflavin.

Question 5

A high intake of raw egg whites (>12 per day) can inhibit absorption of

Accepted Answer

A)   folate.
B)   vitamin B-12.
C)   pantothenic acid.
D)   biotin.

Question 6

Describe how vitamin C,iron,and copper interact to allow metalloenzyme function to proceed.

Accepted Answer

Vitamin C, iron, and copper all play imp...

Question 7

Why are paper and opaque plastic containers used for milk,milk products,and cereals?

Accepted Answer

Paper and opaque plastic containers are ...

Question 8

For vitamin B-12 to be absorbed,it must be attached to

Accepted Answer

A)   an incomplete protein.
B)   intrinsic factor.
C)   bile.
D)   the protein portion of its final coenzyme form.

Question 9

Pyridoxal,pyridoxine,and pyridoxamine are three forms of

Accepted Answer

A)   vitamin B-12.
B)   vitamin P.
C)   folic acid.
D)   vitamin B-6.

Question 10

A defect in the formation of the neural tube during early fetal development can occur from a lack of

Accepted Answer

A)   biotin.
B)   folate.
C)   vitamin B-6.
D)   choline.

Question 11

Which of the following B-vitamins is found in the widest variety of foods (i.e.,different food groups such as vegetables,grains,meat) ?

Accepted Answer

A)   vitamin C
B)   vitamin B-12
C)   pantothenic acid
D)   All of these choices are accurate.

Question 12

The best sources of thiamin in the average diet are

Accepted Answer

A)   pork products, whole or enriched grains and cereals, and legumes.
B)   root vegetables and cheddar-type cheese.
C)   whole grains and fresh fruit.
D)   ham and vegetables of the cabbage family.

Question 13

Irreversible nerve damage may be caused by excessive intake of _______ supplements.

Accepted Answer

A)   vitamin B-12
B)   vitamin B-6
C)   tryptophan
D)   vitamin C

Question 14

About 50% to 90% of folate in foods can be destroyed by

Accepted Answer

A)   food processing and preparation.
B)   ultraviolet light.
C)   oxidation.
D)   All of these choices are accurate.

Question 15

Those most likely to experience a biotin deficiency are

Accepted Answer

A)   adolescents with low energy and, thus, low biotin intake.
B)   alcoholics with impaired biotin absorption.
C)   infants lacking an enzyme required for biotin absorption.
D)   All of these choices are accurate.

Question 16

The compound carnitine is required for

Accepted Answer

A)   fatty acid synthesis.
B)   glycogen breakdown.
C)   active transport of compounds into cells.
D)   transport of fatty acids into mitochondria.

Question 17

The B-vitamin that has significant liver stores is

Accepted Answer

A)   niacin.
B)   folate.
C)   biotin.
D)   vitamin B-12.

Question 18

Describe the symptoms of thiamin deficiency.

Accepted Answer

Thiamin deficiency, also known as beribe...

Question 19

Which of the following factors can interfere with the absorption of vitamin B-12?

Accepted Answer

A)   Surgical removal of the stomach
B)   Defective R-protein synthesis
C)   Infections of the ileum or surgical removal of the ileum
D)   All of these choices are accurate.

Question 20

A characteristic symptom of niacin deficiency is

Accepted Answer

A)   cracks at the corners of the mouth.
B)   a purple-red tongue.
C)   severe edema.
D)   inflammation of the skin after exposure to the sun.

Exam 13: Water-Soluble Vitamins

Pyridoxal,pyridoxine,and pyridoxamine are three forms of

Correct AnswerverifiedShow Answer

Which of the following factors can interfere with the absorption of vitamin B-12?

Correct AnswerverifiedShow Answer

Thiamin should be given to an alcoholic patient who has

Correct AnswerverifiedShow Answer

The coenzyme form of riboflavin is

Correct AnswerverifiedShow Answer

For vitamin B-12 to be absorbed,it must be attached to

Correct AnswerverifiedShow Answer

Irreversible nerve damage may be caused by excessive intake of _______ supplements.

Correct AnswerverifiedShow Answer

A defect in the formation of the neural tube during early fetal development can occur from a lack of

Correct AnswerverifiedShow Answer

A characteristic symptom of niacin deficiency is

Correct AnswerverifiedShow Answer

The B-vitamin that has significant liver stores is

Correct AnswerverifiedShow Answer

A high intake of raw egg whites (>12 per day) can inhibit absorption of

Correct AnswerverifiedShow Answer

Describe the symptoms of thiamin deficiency.

Correct AnswerAnswered by ExamLex AIThiamin deficiency, also known as beribe...View AnswerShow Answer

Which of the following B-vitamins is found in the widest variety of foods (i.e.,different food groups such as vegetables,grains,meat) ?

Correct AnswerverifiedShow Answer

The best sources of thiamin in the average diet are

Correct AnswerverifiedShow Answer

Those most likely to experience a biotin deficiency are

Correct AnswerverifiedShow Answer

About 50% to 90% of folate in foods can be destroyed by

Correct AnswerverifiedShow Answer

Describe how vitamin C,iron,and copper interact to allow metalloenzyme function to proceed.

Correct AnswerAnswered by ExamLex AIVitamin C, iron, and copper all play imp...View AnswerShow Answer

Why are paper and opaque plastic containers used for milk,milk products,and cereals?

Correct AnswerAnswered by ExamLex AIPaper and opaque plastic containers are ...View AnswerShow Answer

Bright yellow urine usually is indicative that someone is supplementing with

Correct AnswerverifiedShow Answer

The primary function of vitamin C in cellular metabolism is to

Correct AnswerverifiedShow Answer

The compound carnitine is required for

Correct AnswerverifiedShow Answer

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Answered by ExamLex AI
Thiamin deficiency, also known as beribe...
View Answer

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Correct Answer
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Correct Answer
Answered by ExamLex AI
Vitamin C, iron, and copper all play imp...
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Paper and opaque plastic containers are ...
View Answer

Correct Answer
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