Question 1

Flushing of the face and skin can result from pharmacological doses of

Accepted Answer

A)   vitamin B-6.
B)   thiamin.
C)   folate.
D)   niacin.E) B) and D)
F) A) and D)

Question 2

Individuals most likely to experience poor vitamin B-12 status are

Accepted Answer

A)   elderly adults, due to atrophic gastritis.
B)   infants, due to low vitamin B-12 content in breast milk.
C)   athletes, due to high vitamin B-12 requirements.
D)   pregnant women, due to high vitamin B-12 requirements.E) All of the above
F) A) and D)

Question 3

Consuming a glass of orange juice with a meal may promote the absorption of the iron in that meal.

Accepted Answer

A) True 
 B)False

Question 4

Physiological changes associated with scurvy (hemorrhages,joint pain,fractures) are caused by

Accepted Answer

A)   defective collagen synthesis.
B)   inadequate production of the hormone thyroxine.
C)   failure to synthesize neurotransmitters.
D)   impaired function of the citric acid cycle.E) C) and D)
F) All of the above

Question 5

Supplements of the water-soluble vitamins ______ and _______ are most likely to cause toxicity symptoms.

Accepted Answer

A)   thiamin; riboflavin
B)   vitamin B-12; pantothenic acid
C)   vitamin B-6; vitamin C
D)   biotin; vitamin B-12E) All of the above
F) C) and D)

Question 6

Vitamin B-12 is supplied mostly in

Accepted Answer

A)   fruits and vegetables.
B)   cereal grains.
C)   foods of animal origin.
D)   None of these answers are correct.E) A) and D)
F) None of the above

Question 7

Although not classified as vitamins,ingestion of the substances taurine and carnitine is required for good health.

Accepted Answer

A) True 
 B)False

Question 8

Biotin is needed for

Accepted Answer

A)   gluconeogenesis.
B)   glutathione reductase.
C)   nicotinamide adenine dinucleotide.
D)   None of these answers are correct.E) B) and C)
F) A) and D)

Question 9

To protect riboflavin from destruction by sunlight,milk and milk products are packaged in

Accepted Answer

A)   clear glass bottles.
B)   paper and opaque plastic cartons.
C)   clear plastic bottles and cartons.
D)   any kind of container.E) All of the above
F) A) and D)

Question 10

Ingestion of vitamin C during meals can modestly improve absorption of

Accepted Answer

A)   beta-carotene
B)   nonheme iron
C)   vitamin B-12
D)   folateE) A) and B)
F) A) and C)

Question 11

The RDA for vitamin C is 60 mg/day or 4 ounces of orange juice a day.

Accepted Answer

A) True 
 B)False

Question 12

Niacin can be obtained from foods as the vitamin itself (preformed niacin) or be synthesized

Accepted Answer

A)   from the B vitamin riboflavin
B)   from the essential amino acid tryptophan
C)   by bacteria in the large intestine
D)   All of the above are correct.E) None of the above
F) A) and D)

Question 13

The first symptom of scurvy is

Accepted Answer

A)   iron-deficiency anemia.
B)   sudden hair loss.
C)   pinpoint hemorrhages around hair follicles.
D)   nerve degeneration.E) B) and D)
F) B) and C)

Question 14

Vitamin B-12 is found in which of the following foods?

Accepted Answer

A)   orange juice
B)   dark green leafy vegetables
C)   seed oils
D)   chickenE) None of the above
F) B) and C)

Question 15

A major role of folate in cellular metabolism is the

Accepted Answer

A)   synthesis of steroid hormones.
B)   conversion of polyunsaturated fatty acids to saturated fatty acids.
C)   formation of glucose from galactose and fructose.
D)   synthesis of purine and pyrimidine bases in RNA and DNA.E) A) and B)
F) A) and C)

Question 16

Most B-vitamins function as

Accepted Answer

A)   fat-soluble vitamins.
B)   coenzymes.
C)   antibodies.
D)   sources of energy.E) A) and B)
F) B) and D)

Question 17

Symptoms of vitamin B-6 deficiency include

Accepted Answer

A)   depression, confusion, and convulsions.
B)   microcytic anemia.
C)   dermatitis.
D)   All of these choices are accurate.E) A) and C)
F) B) and C)

Question 18

Describe why good folate status is especially important for young women.

Accepted Answer

Good folate status is especially importa...

Question 19

The niacin coenzyme is reduced (NAD+  →\rarr→  NADH + H+) during

Accepted Answer

A)   glycolysis.
B)   the pyruvate decarboxylation reaction.
C)   the citric acid cycle.
D)   All of these choices are accurate. E) A) and C)
F) B) and D)

Question 20

Good sources of folate include

Accepted Answer

A)   enriched cereals and grains.
B)   leafy green vegetables.
C)   oranges.
D)   dried beans.
E)   All of these choices are accurate.F) D) and E)
G) A) and D)

Exam 13: Water-Soluble Vitamins

Physiological changes associated with scurvy (hemorrhages,joint pain,fractures) are caused by

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The RDA for vitamin C is 60 mg/day or 4 ounces of orange juice a day.

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The first symptom of scurvy is

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To protect riboflavin from destruction by sunlight,milk and milk products are packaged in

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Vitamin B-12 is found in which of the following foods?

Correct AnswerverifiedShow Answer

Niacin can be obtained from foods as the vitamin itself (preformed niacin) or be synthesized

Correct AnswerverifiedShow Answer

Although not classified as vitamins,ingestion of the substances taurine and carnitine is required for good health.

Correct AnswerverifiedShow Answer

Most B-vitamins function as

Correct AnswerverifiedShow Answer

Good sources of folate include

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The niacin coenzyme is reduced (NAD+ →\rarr→ NADH + H+) during

Correct AnswerverifiedShow Answer

Symptoms of vitamin B-6 deficiency include

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Supplements of the water-soluble vitamins ______ and _______ are most likely to cause toxicity symptoms.

Correct AnswerverifiedShow Answer

Flushing of the face and skin can result from pharmacological doses of

Correct AnswerverifiedShow Answer

Consuming a glass of orange juice with a meal may promote the absorption of the iron in that meal.

Correct AnswerverifiedShow Answer

Vitamin B-12 is supplied mostly in

Correct AnswerverifiedShow Answer

Describe why good folate status is especially important for young women.

Correct AnswerAnswered by ExamLex AIGood folate status is especially importa...View AnswerShow Answer

A major role of folate in cellular metabolism is the

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Ingestion of vitamin C during meals can modestly improve absorption of

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Biotin is needed for

Correct AnswerverifiedShow Answer

Individuals most likely to experience poor vitamin B-12 status are

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The niacin coenzyme is reduced (NAD⁺ $\rarr$ NADH + H⁺) during

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Supplements of the water-soluble vitamins and _ are most likely to cause toxicity symptoms.

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Good folate status is especially importa...
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