Understanding Nutrition 1- Questions chapter 10&11
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