Nutrition Chapter 11

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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


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