Verified Chapters 1 - 20, Complete Newest Version
What is meant by the bioavailability of a vitamin in food?
A. The total amount available from plant and animal food
B. The amount absorbed and subsequently used by the body
C. The amount that escapes destruction from food processing
D. The number of different chemical forms of the same vitamin - ANSWER: The
amount absorbed and subsequently used by the body
Beriberi results from a deficiency of
A. niacin.
B. thiamin.
C. vitamin C.
D. vitamin B12. - ANSWER: thiamin
Which of the following is representative of folate availability in foods?
A. Good sources are dairy products and meats
B. Poor sources are fruit juices and vegetable juices
C. Only about 10% of the amount in foods is bioavailable
D. Much of the vitamin is lost during cooking and storage - ANSWER: Much of the
vitamin is lost during cooking and storage
Which of the following is known to significantly affect the body's folate status?
A. Sedentary lifestyle
B. Some anticancer drugs
C. Excess protein intake
D. Insufficient fiber intake - ANSWER: Some anticancer drugs
What type of container is best for protecting the riboflavin content of milk?
A. Airtight
B. Cardboard
C. Transparent glass
D. Translucent plastic - ANSWER: Cardboard
In a person who loses the ability to absorb vitamin B12, approximately what period
of time could elapse before deficiency signs develop?
A. One month
B. Six months
,C. One year
D. Three years - ANSWER: Three years
If a person refrained from ingesting any of the water-soluble vitamins, deficiency
symptoms would appear last for
A. folate.
B. vitamin C.
C. vitamin B1.
D. vitamin B12. - ANSWER: vitamin B12
A general niacin deficiency is known to be manifested in abnormalities of all of the
following organs/systems except
A. skin.
B. skeletal.
C. nervous system.
D. gastrointestinal tract. - ANSWER: skeletal
Which of the following is a general function of vitamin C?
A. Antiviral agent
B. Antifungal agent
C. Anticancer agent
D. Antioxidant agent - ANSWER: Antioxidant agent
Which of the following statements is representative of vitamin supplementation
practices?
A. Most people who take supplements consume a poor diet
B. Most people should take supplements daily because of the great difficulty in
obtaining the needed amounts from food
C. People who have low energy intakes or are pregnant are at risk for developing
deficiencies and may benefit from supplementation
D. People should take supplements daily because nutrition surveys in the U.S. and
Canada have detected deficiencies in some population groups - ANSWER: People
who have low energy intakes or are pregnant are at risk for developing deficiencies
and may benefit from supplementation
All of the following are characteristics of excess consumption of beta-carotene
EXCEPT
A. overconsumption from foods is harmless.
B. overconsumption from supplements is harmless.
C. drinking alcohol worsens the adverse effects of supplements.
D. smoking cigarettes aggravates the detrimental effects of supplements. - ANSWER:
overconsumption from supplements is harmless
, How many micrograms of dietary beta-carotene are equivalent to 1 retinol activity
equivalent?
A. 2
B. 4
C. 8
D. 12 - ANSWER: 12
Why shouldn't a 7-month pregnant woman be prescribed Accutane?
A. It may aggravate existing edema
B. It may lead to prolongation of labor
C. It is a teratogen and can be harmful to the baby
D. It contains high concentrations of vitamin D that can cause birth defects -
ANSWER: It is a teratogen and can be harmful to the baby
.On average, one retinol activity equivalent is equal to about how many international
units?
A. 3
B. 5
C. 8
D. 10 - ANSWER: 3
Which of the following is likely to induce vitamin A toxicity in adults?
A. Eating beef liver more than once a month
B. Consuming high-dose vitamin A supplements
C. Drinking 2 quarts of vitamin A-fortified milk daily
D. Consuming large amounts of dark green and deep orange vegetables - ANSWER:
Consuming high-dose vitamin A supplements
Which of the following is the most reliable source of vitamin D in the diet?
A. Meat
B. Fortified milk
C. Fruits and vegetables
D. Enriched breads and cereals - ANSWER: Enriched breads and cereals
The major function of vitamin E is to inhibit the destruction of
A. lysosomes.
B. free radicals.
C. mucopolysaccharides.
D. polyunsaturated fatty acids. - ANSWER: polyunsaturated fatty acids.