Question 1

What is the RDA for vitamin D for a 20-year-old person?

Accepted Answer

A)   5 m g
B)   10 m g
C)   15 m g
D)   20 m g
E)   50 m gF) C) and E)
G) A) and B)

Question 2

Which of the following is a naturally occurring food source of vitamin D?

Accepted Answer

A)   egg whites
B)   red meats
C)   tomato juice
D)   carrots
E)   salmonF) A) and C)
G) A) and B)

Question 3

Substances that induce oxidative stress are called "________."

Accepted Answer

A)   prooxidants
B)   antioxidants
C)   free radical generators
D)   reactive electron oxidants
E)   oxidative facilitatorsF) B) and D)
G) None of the above

Question 4

Which of the following statements accurately describes vitamin A's role in vision?

Accepted Answer

A)   Retinoic acid is the form required for synthesis of retinoblasts.
B)   Light causes retinal to shift from a cis to a trans configuration.
C)   Retinol is the form bound to beta-carotene in the corneal membrane.
D)   Pigment molecules in the retina are composed of vitamin A and the protein elastin.
E)   Retinol protects the visual cortex from teratogenic chemicals.F) A) and C)
G) B) and E)

Question 5

What is the name of the disease that can result from absence of clotting factors?

Accepted Answer

A)   GI disorders
B)   arrythmia
C)   Alzheimer's
D)   hemorrhagic disease
E)   hemophiliaF) A) and D)
G) A) and C)

Question 6

Describe the two ways in which vitamin A promotes vision.

Accepted Answer

Vitamin A plays two indispensable roles ...

Question 7

Which of the following accurately describes vitamin A in foods?

Accepted Answer

A)   Xanthophylls in beets and corn masks the presence of beta-carotene.
B)   Butter is a poor source of vitamin A.
C)   Most carotenoids can be converted in the body to active vitamin A.
D)   Chlorophyll in dark green, leafy vegetables masks the presence of beta-carotene.
E)   Plants contain retinoids but no carotenoids.F) D) and E)
G) A) and E)

Question 8

Liver is a rich source of vitamin A, so why should humans consume it with caution?

Accepted Answer

People sometimes wonder if eating liver ...

Question 9

Of the following, which is rapidly corrected when treated with vitamin A supplements?

Accepted Answer

A)   acne
B)   rickets
C)   osteomalacia
D)   night blindness
E)   scurvyF) A) and B)
G) A) and C)

Question 10

Worldwide, vitamin A deficiency causes about ________ children to go blind each year.

Accepted Answer

A)   125,000
B)   250,000
C)   500,000
D)   750,000
E)   1,000,000F) B) and E)
G) A) and C)

Question 11

Which of the following terms refers to the plant form of vitamin K?

Accepted Answer

A)   ergodione
B)   menaquinone
C)   tocopherone
D)   phylloquinone
E)   ergotamineF) B) and C)
G) A) and B)

Question 12

_____ is t he normal protein of the hair and nails is called.

Accepted Answer

The answer of _____ is t he normal protein of...

Question 13

How does vitamin A affect bone health?

Accepted Answer

A)   It stimulates uptake of calcium from the intestines.
B)   It promotes synthesis of specific bone proteins involved in the mineralization process.
C)   It assists enzymes that degrade certain regions of the bone, thereby allowing remodeling to occur.
D)   It inhibits oxidation of bone mucopolysaccharides, thereby preserving bone crystal integrity and promoting growth.
E)   It ensures the formation of healthy bone matrix in utero.F) A) and E)
G) B) and D)

Question 14

What is prothrombin?

Accepted Answer

A)   a storage protein for vitamin K
B)   a transport protein for vitamin E
C)   an active protein needed for bone formation
D)   an inactive protein needed for blood clot formation
E)   a soluble protein that decreases the "stickiness" of red blood cellsF) C) and D)
G) A) and C)

Question 15

Vitamin D  2  is derived from plant foods and also is known as ________.

Accepted Answer

A)   ergocalciferol
B)   foliocalciferol
C)   cholecalciferol
D)   phyllocalciferol
E)   xanthociferolF) A) and D)
G) C) and E)

Question 16

Which of the following is NOT a form of vitamin A?

Accepted Answer

A)   retinol
B)   retinal
C)   retinoic acid
D)   retinoquinone
E)   beta-c aroteneF) D) and E)
G) B) and E)

Question 17

Which disorder is seen in premature infants deficient in vitamin E?

Accepted Answer

A)   rickets
B)   xerophthalmia
C)   muscular dystrophy
D)   erythrocyte hemolysis
E)   osteomalaciaF) C) and E)
G) A) and D)

Question 18

How does sunlight help the body synthesize and activate vitamin D?

Accepted Answer

To make vitamin D, ultraviolet rays from...

Question 19

The bacteria-produced form of vitamin K, also called K  2  , is ____________________.

Accepted Answer

Question 20

________ is a bone disease characterized by softening of the bones and occurs most often in adult women.

Accepted Answer

The answer of ________ is a bone disease characterized by...

Exam 11: The Fat-Soluble Vitamins: A, D, E, and K

Describe the two ways in which vitamin A promotes vision.

Correct AnswerverifiedVitamin A plays two indispensable roles ...View AnswerShow Answer

Which of the following terms refers to the plant form of vitamin K?

Correct AnswerverifiedShow Answer

________ is a bone disease characterized by softening of the bones and occurs most often in adult women.

Correct AnswerverifiedShow Answer

What is prothrombin?

Correct AnswerverifiedShow Answer

_____ is t he normal protein of the hair and nails is called.

Correct AnswerverifiedShow Answer

Substances that induce oxidative stress are called "________."

Correct AnswerverifiedShow Answer

Which disorder is seen in premature infants deficient in vitamin E?

Correct AnswerverifiedShow Answer

What is the RDA for vitamin D for a 20-year-old person?

Correct AnswerverifiedShow Answer

Which of the following statements accurately describes vitamin A's role in vision?

Correct AnswerverifiedShow Answer

Which of the following accurately describes vitamin A in foods?

Correct AnswerverifiedShow Answer

What is the name of the disease that can result from absence of clotting factors?

Correct AnswerverifiedShow Answer

Of the following, which is rapidly corrected when treated with vitamin A supplements?

Correct AnswerverifiedShow Answer

Worldwide, vitamin A deficiency causes about ________ children to go blind each year.

Correct AnswerverifiedShow Answer

Which of the following is NOT a form of vitamin A?

Correct AnswerverifiedShow Answer

How does vitamin A affect bone health?

Correct AnswerverifiedShow Answer

The bacteria-produced form of vitamin K, also called K 2 , is ____________________.

Correct AnswerverifiedShow Answer

Vitamin D 2 is derived from plant foods and also is known as ________.

Correct AnswerverifiedShow Answer

How does sunlight help the body synthesize and activate vitamin D?

Correct AnswerverifiedTo make vitamin D, ultraviolet rays from...View AnswerShow Answer

Which of the following is a naturally occurring food source of vitamin D?

Correct AnswerverifiedShow Answer

Liver is a rich source of vitamin A, so why should humans consume it with caution?

Correct AnswerverifiedPeople sometimes wonder if eating liver ...View AnswerShow Answer

Correct Answer
verified
Vitamin A plays two indispensable roles ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The bacteria-produced form of vitamin K, also called K ₂ , is ____________________.

Correct Answer
verified

Vitamin D ₂ is derived from plant foods and also is known as ________.

Correct Answer
verified

Correct Answer
verified
To make vitamin D, ultraviolet rays from...
View Answer

Correct Answer
verified

Correct Answer
verified
People sometimes wonder if eating liver ...
View Answer