Question 1

When light strikes rhodopsin, retinal changes its shape from:

Accepted Answer

A)   cis-retinal to retinoic acid.
B)   cis-retinal to trans-retinal.
C)   trans-retinal to cis-retinal.
D)   cis-retinoic acid to cis-retinal.
E)   trans-retinoic acid to cis-retinal.F) B) and E)
G) A) and B)

Question 2

Which of these conditions can increase the tendency to bleed?

Accepted Answer

A)   vitamin A toxicity
B)   vitamin D deficiency
C)   vitamin E deficiency
D)   vitamin K deficiency
E)   vitamin D and vitamin K deficienciesF) A) and B)
G) A) and E)

Question 3

Which of the following may protect against free radicals?

Accepted Answer

A)   sedentary lifestyle
B)   exposure to UV radiation
C)   compromised immune function
D)   vitamin E supplementation
E)   cigarette smokingF) A) and E)
G) All of the above

Question 4

For absorption, fat-soluble vitamins are packed into _____ and transported into the _____.

Accepted Answer

A)   chylomicrons; blood vessels
B)   LDLs; blood vessels
C)   chylomicrons; lymph
D)   LDLs; lymph
E)   VLDLs; lymphF) A) and D)
G) D) and E)

Question 5

Which of the following is NOT a function of vitamin E?

Accepted Answer

A)   Vitamin E acts as an antioxidant.
B)   Vitamin E prevents oxidative changes in low-density lipoproteins.
C)   Vitamin E protects white blood cells from damage.
D)   Vitamin E prevents damage to nervous tissue.
E)   Vitamin E supplements are effective in treating heart disease.F) A) and B)
G) A) and D)

Question 6

In order to reduce risk of vitamin D toxicity, one should avoid:

Accepted Answer

A)   consuming too much salmon.
B)   too much exposure to sunlight.
C)   consuming too much fortified milk and dairy products.
D)   consuming vitamin D fortified juices.
E)   high-dose vitamin D supplements.F) C) and D)
G) B) and C)

Question 7

Which vitamin is given to infants soon after birth to reduce the risk of hemorrhage?

Accepted Answer

A)   vitamin A
B)   vitamin D
C)   vitamin K
D)   vitamin E
E)   tocopherolF) B) and D)
G) A) and B)

Question 8

Which fat-soluble vitamin has no established Upper Tolerable Intake Level (UL) ?

Accepted Answer

A)   vitamin A
B)   vitamin K
C)   vitamin D
D)   vitamin E
E)   both vitamins A and KF) All of the above
G) A) and D)

Question 9

Name characteristics (not including low-dietary intake) that place certain individuals at higher risk of vitamin D deficiency and explain why they may be deficient.

Accepted Answer

There are several characteristics that c...

Question 10

How many micrograms of beta-carotene would you need to consume from food to provide 10 micrograms of retinol?

Accepted Answer

It takes 12 micrograms of beta-carotene ...

Question 11

Which of the following is true about vitamin D?

Accepted Answer

A)   Meeting vitamin D requirements via food is easy since there are many excellent natural food sources.
B)   In the United States, a small fraction of the milk supply is vitamin D fortified.
C)   Some scientists question whether the vitamin D recommendations are high enough to promote optimal health.
D)   The RDAs for vitamin D assume most people are getting at least 20 minutes of sun exposure per day.
E)   All of these are true.F) A) and C)
G) A) and B)

Question 12

Which of the following is a measure used to reduce vitamin A deficiency?

Accepted Answer

A)   vitamin A supplementation
B)   adding vitamin A to enriched grains
C)   adding vitamin A to water supplies
D)   biofortification with vitamin A
E)   vitamin A supplementation and biofortification with vitamin AF) A) and C)
G) None of the above

Question 13

An early sign of vitamin A deficiency is:

Accepted Answer

A)   carotenemia.
B)   hypervitaminosis A.
C)   night blindness.
D)   infectious diseases.
E)   keratinization.F) B) and D)
G) D) and E)

Question 14

Fat-soluble vitamins are mainly stored in:

Accepted Answer

A)   the gallbladder.
B)   the gallbladder and liver.
C)   skeletal muscles and liver.
D)   skeletal muscles and fatty tissues.
E)   fatty tissues and liver.F) C) and D)
G) A) and E)

Question 15

The visual pigment rhodopsin is made of _____ and _____.

Accepted Answer

A)   opsin; beta-carotene
B)   opsin; retinol
C)   opsin; retinal
D)   opsin; retinoic acid
E)   opsin; xanthophyllF) A) and D)
G) B) and E)

Question 16

Which deficiency condition is related to vitamin A's role in maintaining epithelial tissue?

Accepted Answer

A)   hypervitaminosis A
B)   osteomalacia
C)   reduced immune function
D)   keratinization
E)   skin cancerF) A) and B)
G) D) and E)

Question 17

Which foods are the richest source of beta-carotene?

Accepted Answer

A)   beef liver and tuna
B)   skim milk and other low-fat dairy products
C)   dark, leafy, green vegetables
D)   carrots and sweet potatoes
E)   mango and pink grapefruitF) C) and D)
G) All of the above

Question 18

_____is used to synthesize vitamin D when human skin is exposed to UV radiation.

Accepted Answer

A)   Calcitriol
B)   Melanin
C)   Cortisol
D)   Tocopherol
E)   CholesterolF) A) and B)
G) C) and D)

Question 19

Which is an example of provitamin A?

Accepted Answer

A)   retinoic acid
B)   retinol
C)   retinal
D)   tocopherol
E)   beta-caroteneF) B) and D)
G) C) and E)

Question 20

Orange juice is often fortified with both calcium and vitamin D. How does vitamin D help maintain calcium levels in the blood?

Accepted Answer

Vitamin D plays a crucial role in mainta...

Exam 7: Fat-Soluble Vitamins

Name characteristics (not including low-dietary intake) that place certain individuals at higher risk of vitamin D deficiency and explain why they may be deficient.

Correct AnswerAnswered by ExamLex AIThere are several characteristics that c...View AnswerShow Answer

Which of the following is NOT a function of vitamin E?

Correct AnswerverifiedShow Answer

In order to reduce risk of vitamin D toxicity, one should avoid:

Correct AnswerverifiedShow Answer

Which deficiency condition is related to vitamin A's role in maintaining epithelial tissue?

Correct AnswerverifiedShow Answer

How many micrograms of beta-carotene would you need to consume from food to provide 10 micrograms of retinol?

Correct AnswerverifiedIt takes 12 micrograms of beta-carotene ...View AnswerShow Answer

Which is an example of provitamin A?

Correct AnswerverifiedShow Answer

Which of the following may protect against free radicals?

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Orange juice is often fortified with both calcium and vitamin D. How does vitamin D help maintain calcium levels in the blood?

Correct AnswerAnswered by ExamLex AIVitamin D plays a crucial role in mainta...View AnswerShow Answer

Which fat-soluble vitamin has no established Upper Tolerable Intake Level (UL) ?

Correct AnswerverifiedShow Answer

Fat-soluble vitamins are mainly stored in:

Correct AnswerverifiedShow Answer

An early sign of vitamin A deficiency is:

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_____is used to synthesize vitamin D when human skin is exposed to UV radiation.

Correct AnswerverifiedShow Answer

Which of the following is true about vitamin D?

Correct AnswerverifiedShow Answer

Which of the following is a measure used to reduce vitamin A deficiency?

Correct AnswerverifiedShow Answer

For absorption, fat-soluble vitamins are packed into _____ and transported into the _____.

Correct AnswerverifiedShow Answer

Which of these conditions can increase the tendency to bleed?

Correct AnswerverifiedShow Answer

The visual pigment rhodopsin is made of _____ and _____.

Correct AnswerverifiedShow Answer

Which vitamin is given to infants soon after birth to reduce the risk of hemorrhage?

Correct AnswerverifiedShow Answer

When light strikes rhodopsin, retinal changes its shape from:

Correct AnswerverifiedShow Answer

Which foods are the richest source of beta-carotene?

Correct AnswerverifiedShow Answer

Correct Answer
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There are several characteristics that c...
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It takes 12 micrograms of beta-carotene ...
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Answered by ExamLex AI
Vitamin D plays a crucial role in mainta...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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For absorption, fat-soluble vitamins are packed into _ and transported into the _.

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Correct Answer
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The visual pigment rhodopsin is made of _ and _.

Correct Answer
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Correct Answer
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Correct Answer
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