Nutrition Chapter 11
Keratinization is the result of
Deficiency of vitamin A
Greg says that he usually eats 1 medium carrot every day to ensure that he's consuming enough vitamin A. Today he said he didn't eat any carrots and is worried that there is not enough vitamin A in his system. What would you say to Greg to allay his fear?
Dont worry; fat-soluble vitamins are stored in the body. It takes a lot longer than one day to develop any adverse effects.
\Increasing the amount of polyunsaturated fats in the diet increases the need for vitamin
E
Which of the following can the body use to synthesize vitamin D?
Exposure to sunlight
Which of the following is the most reliable source of vitamin D in the diet?
Fortified milk
All of the following are features of vitamin K in nutrition except
Gut microflora synthesis supplies sufficient amounts to meet the needs of most healthy adults
All of the following organs are required for the complete synthesis of activated vitamin D except
Intestines
How is vitamin E thought to play a role in reducing the risk of heart disease?
It slows oxidation of low-density lipoproteins
Which of the following vitamins are synthesized by intestinal bacteria?
K and biotin
What is the name of the vitamin D-deficiency condition in adults?
Osteomalacia
Jennifer has just had a baby. When she brings Thomas home, she regales you with the details of her hospital stay. She mentions that shortly after the birth, Thomas received an intramuscular injection of vitamin K, and she wondered why this was done, as it made him cry. You explained that it
Prevented possible bleeding events
What is/are the main function(s) of vitamin D?
Promotes calcium and phosphorus absorption and promotes calcium mobilization from bone
Of the following foods, which is the best source of vitamin A?
Pumpkin pie
The preferred unit of expression of vitamin A is the
Retinol activity equivalent
All of the following are forms of vitamin A except
Retinoquinone
Your sister Ellen has just joined the Peace Corps and will be working on ways to improve the nutritional status of children in Indonesia. Once there, she saw that many of the children and some adults suffer from night blindness. Which of the following foods should she recommend be incorporated into the Indonesian diet to help prevent future generations from developing this condition?
Sweet potato
All of the following are characteristics of vitamin D nutrition except
The requirement is increased in most people who are exposed to the sun
Approximately what percentage of the bodys store of vitamin K is derived from the GI tract bacteria?
50
The risk for vitamin D deficiency increases with advancing age for all of the following reasons except reduced
Absorption of dietary vitamin D
Which of the following is likely to induce vitamin A toxicity in adults?
Consuming high-dose vitamin A supplements
Among the following, which contains the highest concentration of vitamin E?
Corn oil
A child with bowed legs is likely deficient in vitamin
D
In what chief capacity does vitamin K function?
Blood clotting
Which of the following features do vitamins C and E share
Both function as antioxidants
Which of the following symptoms would indicate a vitamin D deficiency?
Bowed legs
The plant version of vitamin D is known as
ergocalciferol
The major function of vitamin E is to inhibit the destruction of
polyunsaturated fatty acids
Which of the following is not among the features of the fat-soluble vitamins?
Transported permanently to the liver and adipose tissue
Which of the following are major sources of vitamin E in the diet?
Vegetable oils
What is a free radical?
a molecule that is unstable and highly reactive because it contains unpaired electrons
All of the following are other names for vitamin D except
calcitonin
The animal version of vitamin D is known as
cholecalciferol
The main function of vitamin E in the body is to act as a(n)
Antioxidant
The process of bone remodeling is known to be dependent on all of the fat-soluble vitamins except
Vitamin E