Understanding Nutrition 1- Questions chapter 10&11

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Which of the following is a property of the fat soluble vitamins?

Deficiency symptoms may take years to develop on a poor diet

A person with a disorder that limits absorption of bile is at increased risk for deficiency of?

Folate

Which of the following is a feature of niacin nutrition?

High doses may lower blood cholesterol

What is most likely reason for the development of a B 12 deficiency?

Inadequate absorption

The synthesis of collagen requires both vitamin C and_______?

Iron

What is the function of intrinsic factor in B12 absorption?

It attaches to the vitamin, thereby allowing absorption from the small intestine

In what major way does alcohol intake affect vitamin B6 metabolism?

It dislodges the PLP coenzyme from its enzyme

Your friend Jane just returned from the doctor, who diagnosed her with a specific vitamin B toxicity. However she does not recall the name of the vitamin. Which vitamin listed is the only possible culprit associated with toxicity symptoms?

Niacin

What term identifies the characteristic tingling sensations and redness of the skin after ingesting a Pharmacologic of nicotinic acid

Niacin flush

Which of the following is known to require vitamin K for its synthesis?

Prothrombin

A deficiency of what vitamin produces a characteristic cracking redness around the corners of the mouth?

Riboflavin

In what system with the effects of vitamin D deficiency be most readily observed?

Skeletal

What is an overt signs of a possible B vitamin deficiency?

Smooth tongue

What is the best source of dietary vitamin K?

Spinach

Which food is highest in Folate?

Spinach

Which food choice would be the only sustainable source of vitamin B12?

Steak

Approximately what percentage of naturally occurring dietary folate is bioavailable?

50

Which property is shared by niacin and riboflavin coenzymes?

Acceptance and transfer of hydrogen atoms

What is the chief function of the B vitamins?

Coenzyme participation

Which of the following vitamins is synthesized by intestinal bacteria?

Biotin

What are the known effects of raising animals on diets containing retinoic acid as the only source of vitamin A?

Blindness develops

What do beta-carotene and vitamin E have in common?

Both act as antioxidants

Riboflavin needs are more difficult to meet when the diet is low in

dairy foods

Which of the following is a naturally occurring food source of vitamin D?

egg yolks

Which of the following conditions may improve with vitamin E therapy?

intermittent claudication

Vitamin A supplements are helpful in treating which of the following conditions?

night blindness

Which of the following vitamins is known to sustain substantial losses during processing of food?

pantothenic acid

The major function of vitamin E is to inhibit the destruction of

polyunsaturated fatty acids

Which of the following is the name of the vitamin A compound that is active in the visual response?

retinal

Absorption efficiency of vitamin D supplements is markedly improved when they are taken

with a large meal

Wire vitamin D deficiency is rarely observed in human beings?

The vitamin is widespread in foods

Which of the following is a characteristic of free radicals?

They arise from normal metabolic reactions

Why might vitamin C supplements be beneficial in treating the common cold?

They deactivate histamine

In which of the following individuals would vitamin A toxicity be most likely to occur?

Those taking vitamin A supplements

Why does vitamin A status depend on the persons proteins status?

Transport of the vitamin within the body requires sufficient proteins to synthesize retinol binding protein

Which type of food is a major source of vitamin D in the diet?

Vegetable oils

The absorption of which vitamin is most affected by the disorder atrophic gastritis?

Vitamin B12

Which vitamin is stored primarily in muscle tissue

Vitamin B6

Which of the following compounds is known to function as a hormone?

Vitamin D

Of the following which would most readily induce a vitamin K deficiency?

antibiotic therapy

Which of the following food substances can be converted to vitamin A in the body?

beta-carotene

What is an early sign of vitamin C deficiency?

bleeding gums

In what chief capacity does vitamin K function?

blood clotting

The animal version of vitamin D is known as?

cholecalciferol

Which of the following nutrients is synthesized in significant amounts in the body?

choline

The chief symptoms of early vitamin B6 deficiency include

confusion and depression

Riboflavin is most easily destroyed when exposed to?

ultraviolet light

Increasing the amount of poly unsaturated fats in the diet increases the need for vitamin?

Vitamin E

Which of the following vitamins is least associated with the process of bone remodeling?

Vitamin E

Which vitamin prevents the oxidation of low density lipoproteins

Vitamin E


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