Question 1

All antioxidants are water soluble.

Accepted Answer

A) True 
 B)False

Question 2

Examples of antioxidant enzyme systems include superoxide dismutase, glutathione peroxidase, and which of the following?

Accepted Answer

A)  vitamin E
B)  catalase
C)  beta carotene
D)  vitamin CE) A) and B)
F) All of the above

Question 3

A group of fat-soluble plant pigments that are the basis for the orange, red, and deep yellow colors of many fruits and vegetables are called

Accepted Answer

A)  carotenoids.
B)  provitamins.
C)  prooxidants.
D)  chlorophylls.E) B) and D)
F) A) and D)

Question 4

Keshan disease and Kashin-Beck disease are both associated with which deficiency?

Accepted Answer

A)  vitamin A
B)  selenium
C)  vitamin E
D)  calciumE) B) and D)
F) A) and B)

Question 5

Acne is a symptom of a vitamin A deficiency.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following nutrients requires the MOST frequent consumption to assure adequate body stores?

Accepted Answer

A)  vitamin A
B)  vitamin E
C)  vitamin C
D)  beta-caroteneE) A) and B)
F) None of the above

Question 7

Keshan disease is a heart disorder associated with which of the following deficiencies?

Accepted Answer

A)  vitamin A
B)  vitamin C
C)  selenium
D)  ironE) A) and C)
F) B) and C)

Question 8

In some people, long-term use of standard vitamin E supplements has been associated with hemorrhagic stroke caused by bleeding in the brain.

Accepted Answer

A) True 
 B)False

Question 9

The doctor has recently told Julie that she is anemic. Which of the following should Julie consume with her iron supplement to increase its absorption?

Accepted Answer

A)  a tablespoon of castor oil
B)  a glass of milk
C)  a glass of orange juice
D)  scrambled eggsE) C) and D)
F) B) and C)

Question 10

Vitamin C is not stored in the body and must be consumed frequently.

Accepted Answer

A) True 
 B)False  True

Question 11

A genetic disorder that results in an excess of iron absorption and storage is

Accepted Answer

A)  hemochromatosis.
B)  hemocystic anemia.
C)  hypoglycemia.
D)  aplastic anemia.E) B) and C)
F) B) and D)

Question 12

What is an exchange reaction?

Accepted Answer

A)  a reaction that produces free radicals
B)  a two-part metabolic reaction that involves a loss and gain of electrons
C)  the first stage of cancer development, in which a cell's DNA mutates
D)  a reaction that converts a provitamin into the metabolically active formE) B) and C)
F) A) and D)

Question 13

Which of the following are NOT good sources of vitamin C?

Accepted Answer

A)  citrus fruits
B)  milk and cheese
C)  strawberries
D)  broccoliE) A) and B)
F) All of the above

Question 14

A free radical is highly unstable because it has unpaired electrons in its outermost shell.

Accepted Answer

A) True 
 B)False  True

Question 15

Which research study demonstrated a link between vitamin E consumption and a decreased risk of heart disease in smokers?

Accepted Answer

A)  ADA Study
B)  HOPE Study
C)  NIH Study
D)  ATBC StudyE) C) and D)
F) None of the above

Question 16

Antioxidants must be consumed in our diet because our bodies cannot make them.

Accepted Answer

A) True 
 B)False

Question 17

Explain how free radicals are formed in the human body and how antioxidant nutrients function in decreasing human disease.

Accepted Answer

Free radicals are formed in the human bo...

Question 18

The three active forms of vitamin A in our bodies (retinol, retinal, and retinoic acid)  are collectively referred to as the

Accepted Answer

A)  carotenoids.
B)  retinoids.
C)  free radicals.
D)  antioxidants.E) B) and D)
F) B) and C)

Question 19

Which of the following vitamins is the MOST powerful fat-soluble antioxidant?

Accepted Answer

A)  A
B)  D
C)  E
D)  KE) A) and C)
F) None of the above

Question 20

Only the retina's rod cells, and not its cone cells, require retinal.

Accepted Answer

A) True 
 B)False  False

Exam 8: Nutrients Involved in Antioxidant Function

All antioxidants are water soluble.

Correct AnswerverifiedShow Answer

Examples of antioxidant enzyme systems include superoxide dismutase, glutathione peroxidase, and which of the following?

Correct AnswerverifiedShow Answer

A group of fat-soluble plant pigments that are the basis for the orange, red, and deep yellow colors of many fruits and vegetables are called

Correct AnswerverifiedShow Answer

Keshan disease and Kashin-Beck disease are both associated with which deficiency?

Correct AnswerverifiedShow Answer

Acne is a symptom of a vitamin A deficiency.

Correct AnswerverifiedShow Answer

Which of the following nutrients requires the MOST frequent consumption to assure adequate body stores?

Correct AnswerverifiedShow Answer

Keshan disease is a heart disorder associated with which of the following deficiencies?

Correct AnswerverifiedShow Answer

In some people, long-term use of standard vitamin E supplements has been associated with hemorrhagic stroke caused by bleeding in the brain.

Correct AnswerverifiedShow Answer

The doctor has recently told Julie that she is anemic. Which of the following should Julie consume with her iron supplement to increase its absorption?

Correct AnswerverifiedShow Answer

Vitamin C is not stored in the body and must be consumed frequently.

Correct AnswerverifiedTrue

A genetic disorder that results in an excess of iron absorption and storage is

Correct AnswerverifiedShow Answer

What is an exchange reaction?

Correct AnswerverifiedShow Answer

Which of the following are NOT good sources of vitamin C?

Correct AnswerverifiedShow Answer

A free radical is highly unstable because it has unpaired electrons in its outermost shell.

Correct AnswerverifiedTrue

Which research study demonstrated a link between vitamin E consumption and a decreased risk of heart disease in smokers?

Correct AnswerverifiedShow Answer

Antioxidants must be consumed in our diet because our bodies cannot make them.

Correct AnswerverifiedShow Answer

Explain how free radicals are formed in the human body and how antioxidant nutrients function in decreasing human disease.

Correct AnswerAnswered by ExamLex AIFree radicals are formed in the human bo...View AnswerShow Answer

The three active forms of vitamin A in our bodies (retinol, retinal, and retinoic acid) are collectively referred to as the

Correct AnswerverifiedShow Answer

Which of the following vitamins is the MOST powerful fat-soluble antioxidant?

Correct AnswerverifiedShow Answer

Only the retina's rod cells, and not its cone cells, require retinal.

Correct AnswerverifiedFalse

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
True

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
True

Correct Answer
verified

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
Free radicals are formed in the human bo...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
False