Question 1

A lack of dietary iodine during pregnancy is the primary cause of which of the following medical conditions,worldwide?

Accepted Answer

A)   goiters
B)   neural tube defects
C)   anemia
D)   cretinism

Question 2

Vitamin A plays an essential role in the human body in

Accepted Answer

A)   preventing acne.
B)   acting as an antioxidant and scavenging free radicals.
C)   protecting polyunsaturated fatty acids (PUFAs)  from oxidation.
D)   maintaining healthy vision.

Question 3

Define coenzymes and describe their primary functions.Give two examples of how the B-vitamins act as coenzymes during energy metabolism.

Accepted Answer

Coenzymes are organic molecules that wor...

Question 4

A deficiency of thiamin leads to the development of pellagra.

Accepted Answer

A) True 
 B)False

Question 5

To consume the highest level of vitamin E,what should Hari spread on his toast?

Accepted Answer

A)   honey
B)   butter
C)   cream cheese
D)   peanut butter

Question 6

Which of the following statements is FALSE regarding the mineral selenium?

Accepted Answer

A)   Most selenium in our bodies is contained within two amino acids.
B)   Selenium is involved in the maintenance of basal metabolism and body temperature.
C)   Selenium is present only in foods of animal origin.
D)   Selenium is a component of the glutathione peroxidase antioxidant enzyme system.

Question 7

Free radicals

Accepted Answer

A)   have an even number of electrons in their outermost shell.
B)   are rarely formed during normal cellular metabolism.
C)   can extend the life of body cells.
D)   can damage the integrity of cell membranes.

Question 8

Acetylcholine is a vitamin-like nutrient important in metabolism.

Accepted Answer

A) True 
 B)False

Question 9

Research suggests that vitamin C supplements taken daily will reduce the incidence of the common cold.

Accepted Answer

A) True 
 B)False

Question 10

Which water-soluble vitamin can regenerate vitamin E after it has been oxidized?

Accepted Answer

A)   vitamin B₆
B)   vitamin B₁₂
C)   vitamin C
D)   folate

Question 11

In an atom,the electrons orbiting around the nucleus have what kind of a charge?

Accepted Answer

A)   positive
B)   negative
C)   equal
D)   neutral

Question 12

Vitamin E deficiencies are common in people in developing nations.

Accepted Answer

A) True 
 B)False

Question 13

Which of these micronutrients is destroyed by exposure to light?

Accepted Answer

A)   riboflavin
B)   iron
C)   iodine
D)   vitamin D

Question 14

Explain the link between the increasing worldwide adoption of the practice of iodization of table salt and the decreasing worldwide prevalence of goiter and cretinism.

Accepted Answer

The increasing worldwide adoption of the...

Question 15

Which vitamin can be made from the amino acid tryptophan?

Accepted Answer

A)   niacin
B)   vitamin C
C)   folate
D)   vitamin B₁₂

Question 16

People who consume large amounts of raw eggs are susceptible to biotin deficiency.

Accepted Answer

A) True 
 B)False

Question 17

Neural tube defects typically occur before a woman even knows she is pregnant.

Accepted Answer

A) True 
 B)False

Question 18

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

Accepted Answer

A) True 
 B)False

Question 19

There is neither an RDA or an AI for

Accepted Answer

A)   choline.
B)   manganese.
C)   sulfur.
D)   chromium.

Question 20

Ninety percent of the vitamin A we absorb is stored in adipose tissue.

Accepted Answer

A) True 
 B)False

Exam 8: Nutrients Essential to Key Body Functions

Vitamin A plays an essential role in the human body in

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Ninety percent of the vitamin A we absorb is stored in adipose tissue.

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A lack of dietary iodine during pregnancy is the primary cause of which of the following medical conditions,worldwide?

Correct AnswerverifiedShow Answer

Define coenzymes and describe their primary functions.Give two examples of how the B-vitamins act as coenzymes during energy metabolism.

Correct AnswerAnswered by ExamLex AICoenzymes are organic molecules that wor...View AnswerShow Answer

People who consume large amounts of raw eggs are susceptible to biotin deficiency.

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Free radicals

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Which of these micronutrients is destroyed by exposure to light?

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Neural tube defects typically occur before a woman even knows she is pregnant.

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Which water-soluble vitamin can regenerate vitamin E after it has been oxidized?

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A deficiency of thiamin leads to the development of pellagra.

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Vitamin E deficiencies are common in people in developing nations.

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There is neither an RDA or an AI for

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To consume the highest level of vitamin E,what should Hari spread on his toast?

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Explain the link between the increasing worldwide adoption of the practice of iodization of table salt and the decreasing worldwide prevalence of goiter and cretinism.

Correct AnswerAnswered by ExamLex AIThe increasing worldwide adoption of the...View AnswerShow Answer

Research suggests that vitamin C supplements taken daily will reduce the incidence of the common cold.

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Which vitamin can be made from the amino acid tryptophan?

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Acetylcholine is a vitamin-like nutrient important in metabolism.

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Which of the following statements is FALSE regarding the mineral selenium?

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In an atom,the electrons orbiting around the nucleus have what kind of a charge?

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

Correct AnswerverifiedShow Answer

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Coenzymes are organic molecules that wor...
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The increasing worldwide adoption of the...
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