Nutrition Chpt 11 – Flashcards
Unlock all answers in this set
Unlock answersquestion
Which of the following enables much of the world's population to maintain adequate vitamin D status?
answer
Outdoor exposure of the skin to sunlight
question
What population group is at highest risk for osteomalacia?
answer
Adult women
question
Which of the following is a feature of vitamin D?
answer
The average consumption in the United States does not meet the recommended intake
question
Which of the following is a feature of vitamin A nutrition?
answer
Supplements are recommended for certain groups of infants and children infected with the measles in the United States.
question
Which of the following is a feature of vitamin E?
answer
Deficiencies occur from inability to absorb dietary lipids.
question
Which of the following is a naturally occurring food source of vitamin D?
answer
Egg yolks
question
Which of the following is a feature of vitamin D synthesis?
answer
Dark-skinned people require longer sunlight exposure than light-skinned people to synthesize equivalent amounts of vitamin D
question
Which of the following conditions is known to lead to formation of mineral deposits in the blood vessels and kidney?
answer
Excessive intake of vitamin D
question
Which of the following is the name of the vitamin A compound that is active in the visual response?
answer
Retinal
question
The main function of vitamin D is to promote
answer
calcium and phosphorus absorption, and calcium mobilization from bone.
question
Which of the following is a feature of vitamin E in foods?
answer
Most convenience foods are poor sources of vitamin E
question
Which of the following is a feature of vitamin A in foods?
answer
Chlorophyll in dark green leafy vegetables masks the presence of beta-carotene.
question
Worldwide, how many preschool age children go blind each year due to vitamin A deficiency?
answer
500,000
question
What is 7-dehydrocholesterol?
answer
a vitamin D precursor manufactured in the liver
question
What is prothrombin?
answer
A protein needed for blood clot formation
question
Where does the final hydroxylation necessary for the activation of vitamin D occur?
answer
kidney
question
Vitamin A supplements are helpful in treating which of the following conditions?
answer
Night Blindness
question
Of the foods Joan eats, which is the best source of vitamin D?
answer
fortified milk
question
Which of the following is a feature of osteocalcin?
answer
It requires vitamin K to bind to bone-forming minerals.
question
Why does vitamin A status depend on the person's protein status?
answer
Transport of the vitamin within the body requires sufficient protein to synthesize retinol-binding protein.
question
If Joan wants to increase her intake of Vitamin A, which of the following foods would be best?
answer
sweet potatoes
question
What is the major carrier of the fat-soluble vitamins from the intestinal epithelial cell to the circulation?
answer
Chylomicrons
question
Which of the following is a feature of vitamin K?
answer
Vitamin K participates in metabolism of bone proteins
question
At what SPF level will sunscreen start to interfere with vitamin D synthesis?
answer
8
question
Your old friend from high school has just moved to Northern Canada to do full-time research on bats in caves. She typically works in the caves during the day when the bats are there and leaves at sundown when the bats are active. As your friend only purchases organic and all-natural foods, which of the following would you most likely advise she buy regularly at the grocery store?
answer
Vitamin D-fortified milk
question
Approximately what percentage of the body's store of vitamin K is derived from GI tract bacterial synthesis?
answer
50
question
Joan is taking a vitamin E supplement that provides 15 mg. What is the UL for vitamin E in mg⁄day?
answer
1000
question
Since she is on a blood thinner, Joan has been warned about her intake of foods rich in vitamin K. Which of the following food groups is rich in vitamin K?
answer
dark green leafy vegetables
question
Which of the following is a characteristic of vitamin D nutrition?
answer
Prolonged exposure to sunlight degrades the vitamin D precursor in skin, thus preventing vitamin D toxicity
question
What form of tocopherol shows vitamin E activity in the human body?
answer
Alpha
question
What is the name of the vitamin D-deficiency disease in adults?
answer
Osteomalacia
question
Which of the following vitamins has been noted as preventing the oxidation of low-density lipoproteins?
answer
E
