7quiz

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7quiz
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2010-09-07 07:31:23
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  1. 1.In general, which of these factors plays a role in making it easier to attain toxicity with fat-soluble vitamins than with water-soluble vitamins?
    A.fat-soluble vitamins are absorbed into the lymph; water-soluble vitamins are absorbed directly into the blood
    B.water-soluble vitamins are needed in greater amounts than are fat-soluble vitamins AND water-soluble vitamins circulate freely in the blood
    C.water-soluble vitamins are more likely to be lost whencooking a food than are fat-soluble vitamins AND many water-soluble vitamins circulate in the blood attached to protein carriers
    D. fat-soluble vitamins are stored in fat; water-soluble vitamins circulate in the water-filled regions of the body AND the body requires water-soluble vitamins in periodic doses
    E. fat-soluble vitamins are stored in fat while water-soluble vitamins aren't AND fat-soluble vitamins are less readily excreted than are water-soluble vitamins
    • e. fat-soluble
    • vitamins are stored in fat while water-soluble vitamins aren't AND
    • fat-soluble vitamins are less readily excreted than are water-soluble
    • vitamins
  2. 2.In what way do vitamins differ from the carbohydrates, proteins, and fats?
    A.vitamins are not organic
    B.vitamins are energy-yieldingE.vitamins are essential to life
    C.vitamins are needed in smaller amounts and contain no
    D.vitamins are not available from foods; they must be obtained from supplements
    C.vitamins are needed in smaller amounts and contain no
    (this multiple choice question has been scrambled)
  3. 3.Which of these is a vitamin A precursor (provitamin)?
    A.alpha-tocopherol
    B.phylloquinone
    C.beta-carotene
    D.calciferol
    E.cholecalciferol
    C.beta-carotene
    (this multiple choice question has been scrambled)
  4. 4.Which of these is a non-dietary source of vitamin D?
    A.synthesis from intestinal bacteria
    B.synthesis from the sun
    C.intrinsic factor
    D.tryptophan synt
    • A.synthesis from intestinal bacteria
    • B.synthesis from the sun
    • C.intrinsic factor
    • D.tryptophan synt
  5. 5.Which of these symbols on a supplement indicate that the supplement contains the nutrients stated on the packaging and that the nutrient will dissolve (so it can be absorbed) in the digestive tract?
    A.DSHEA
    B.FDA
    C.ADA
    D.USP
    • A.DSHEA
    • B.FDA
    • C.ADA
    • D.USP
  6. 6.Xerophthalmia is the hardening of the cornea that can lead to blindness. What vitamin deficiency hesiswill cause this?
    A.vitamin D
    B.thiamin
    C.vitamin A
    D.niacin
    • A.vitamin D
    • B.thiamin
    • C.vitamin A
    • D.niacin
  7. 7.Which of these is the best dietary source of vitamin E?
    A.red meat
    B.oils
    C.liver
    D.apples
    E.leafy greens
    • A.red meat
    • B.oils
    • C.liver
    • D.apples
    • E.leafy greens
  8. 8.Which vitamin helps to synthesize proteins for blood clotting and also is important for the synthesis of bone protein?
    A.vitamin C
    B.folic acid
    C.vitamin K
    D.riboflavin
    E.vitamin B6
    • A.vitamin C
    • B.folic acid
    • C.vitamin K
    • D.riboflavin
    • E.vitamin B6
  9. 9.Which of these foods is a major dietary source of vitamin K?
    A.leafy green vegetables
    B.nuts
    C.pork
    D.orange juice
    E.legumes
    • A.leafy green vegetables
    • B.nuts
    • C.pork
    • D.orange juice
    • E.legumes
  10. 10.The fat soluble vitamins are: vitamin D, vitamin E, _____ and _____.
    A.vitamins B and C
    B.vitamins B12 and B 6
    C.thiamin and vitamin A
    D.vitamins C and K
    E.vitamins A and K
    • A.vitamins B and C
    • B.vitamins B12 and B 6
    • C.thiamin and vitamin A
    • D.vitamins C and K
    • E.vitamins A and K
  11. 11.What name is given to a vitamin C deficiency?
    A.beriberi
    B.pellagra
    C.scurvy
    D.ariboflavinosis
    E.ascorbic
    • A.beriberi
    • B.pellagra
    • C.scurvy
    • D.ariboflavinosis
    • E.ascorbic
  12. 12.What is a coenzyme?
    A.it is the functional site of an enzyme
    B.it is the site on an enzyme where the chemical reaction occurs
    C.it is the wheels on a car
    D.it is a molecule that combines with, and activates, an enzyme
    E.it is a compound that speeds up the rate at which a reaction occurs\
    • A.it is the functional site of an enzyme
    • B.it is the site on an enzyme where the chemical reaction occurs
    • C.it is the wheels on a car
    • D.it is a molecule that combines with, and activates, an enzyme
    • E.it is a compound that speeds up the rate at which a reaction occurs\
  13. 13.Which of these is a major function of the B vitamins?
    A.serve as antioxidants
    B.important for bone mineralization
    C.red blood cell synthesis
    D.part of coenzymes that play a role in energy metabolism
    E.conversion of tryptophan to niacin
    • A.serve as antioxidants
    • B.important for bone mineralization
    • C.red blood cell synthesis
    • D.part of coenzymes that play a role in energy metabolism
    • E.conversion of tryptophan to niacin
  14. 14.Which of these foods contributes the most to dietary riboflavin?
    A.milk and milk products
    B.fruits
    C.leafy green vegetables
    D.beef
    E.conversion form tryptophan
    • A.milk and milk products
    • B.fruits
    • C.leafy green vegetables
    • D.beef
    • E.conversion form tryptophan
  15. 15.Which of these vitamins plays a role in energy metabolism?
    A.riboflavin
    B.vitamin A
    C.vitamin B 12
    D.vitamin B 6
    E.folate
    • A.riboflavin
    • B.vitamin A
    • C.vitamin B 12
    • D.vitamin B 6
    • E.folate
  16. 16.Which of these is NOT a symptom of pellagra?
    A.diarrhea
    B.dermatitis
    C.diverticula
    D.dementia
    E.death
    • A.diarrhea
    • B.dermatitis
    • C.diverticula
    • D.dementia
    • E.death
  17. 17.Why are dietary recommendations for niacin given as niacin equivalents?
    A.the body can convert dietary fatty acids into niacin
    B.the body can convert dietary tryptophan into niacin
    C.the body can convert phenylalanine into niacin
    D.the body can convert dietary pyridoxal into niacin
    E.the body can convert dietary intrinsic factor into niacin
    • A.the body can convert dietary fatty acids into niacin
    • B.the body can convert dietary tryptophan into niacin
    • C.the body can convert phenylalanine into niacin
    • D.the body can convert dietary pyridoxal into niacin
    • E.the body can convert dietary intrinsic factor into niacin
  18. 18.Which of these coenzymes plays a role in the synthesis of DNA?
    A.riboflavin
    B.thiamin
    C.niacin
    D.biotin
    E.folate
    • A.riboflavin
    • B.thiamin
    • C.niacin
    • D.biotin
    • E.folate
  19. 19.Of all the vitamins, which is the most likely to interact with medications?
    A.folate
    B.thiamin
    C.riboflavin
    D.vitamin B 6
    E.niacin
    • A.folate
    • B.thiamin
    • C.riboflavin
    • D.vitamin B 6
    • E.niacin
  20. 20.Which vitamin is involved in both new cell synthesis and the maintenance of nerve cells?
    A.vitamin C
    B.riboflavin
    C.vitamin B 12
    D.thiamin
    E.niacin
    • A.vitamin C
    • B.riboflavin
    • C.vitamin B 12
    • D.thiamin
    • E.niacin
  21. 21.Which vitamin requires stomach acidity and intrinsic factor in order to be absorbed?
    A.folate
    B.thiamin
    C.biotin
    D.vitamin B 12
    E.riboflavin
    • A.folate
    • B.thiamin
    • C.biotin
    • D.vitamin B 12
    • E.riboflavin
  22. 22.Beriberi is caused by a ____ deficiency.
    A.vitamin A
    B.riboflavin
    C.thiamin
    D.vitamin B 6
    E.pantothenic acid
    • A.vitamin A
    • B.riboflavin
    • C.thiamin
    • D.vitamin B 6
    • E.pantothenic acid
  23. 23.High levels of homocysteine correlate with ________.
    A.folate toxicity
    B.vitamin B 12
    C.vitamin B 6
    D.an increased risk of CVD
    E.an increased risk of cancer
    • A.folate toxicity
    • B.vitamin B 12
    • C.vitamin B 6
    • D.an increased risk of CVD
    • E.an increased risk of cancer
  24. 24.Which of these individuals is LEAST likely to benefit from taking a vitamin supplement?
    A.elderly individuals
    B.newborns
    C.vegetarians
    D.drug addicts
    E.healthy middle-aged males
    • A.elderly individuals
    • B.newborns
    • C.vegetarians
    • D.drug addicts
    • E.healthy middle-aged males
  25. 25.Which of these vitamins play a major role as antioxidants?
    A.beta carotene
    B.vitamin C
    C.vitamins E
    D.all of the above
    • A.beta carotene
    • B.vitamin C
    • C.vitamins E
    • D.all of the above
  26. 26.Rickets and osteomalacia are caused by a _____ deficiency.
    A.vitamin D
    B.vitamin
    C.folic acid
    D.vitamin E
    • A.vitamin D
    • B.vitamin
    • C.folic acid
    • D.vitamin E

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