CNSC EXAM, CH. 8: VITAMINS AND TRACE ELEMENTS QUESTIONS AND CORRECT ANSWERS

CNSC EXAM, CH. 8: VITAMINS AND
TRACE ELEMENTS QUESTIONS AND
CORRECT ANSWERS
WhatA2amountA2ofA2retinolA2isA2equivalentA2toA224mcgA2ofA2beta-caroteneA2fromA2food?
A2A)A22mcg;A2B)A24mcg;A2C)2mg;A2D)A21mgA2-A2Ans--
A)A22mcg.A2OneA2mcgA2retinolA2hasA2theA2vitaminA2AA2activityA2ofA212mcgA2beta-carotene

WhichA2ofA2theA2followingA2nutrientsA2doesA2NOTA2engageA2inA2conversionA2ofA2homocyst
eineA2toA2methionine?A2A)A2Choline;A2B)A2VitaminA2D;A2C)A2VitaminA2B12;A2D)A2FolateA2-
A2Ans--B)A2VitaminA2D


WhichA2ofA2theA2followingA2traceA2elementsA2isA2regulatedA2atA2theA2levelA2ofA2absorptionA
2butA2notA2excretion?A2A)A2Zinc;A2B)A2Copper;A2C)A2Manganese;A2D)A2IronA2-A2Ans--
D)A2Iron.A2ItA2isA2veryA2difficultA2toA2eliminateA2ironA2exceptA2inA2conditionsA2ofA2bloodA2los
s

GenerallyA2vitaminA2AA2existsA2asA2whatA2inA2animalA2tissueA2andA2whatA2inA2plants?A2-
A2Ans--RetinoidsA2inA2animalA2tissue;A2carotenoidsA2inA2plants


MostA2stableA2formA2ofA2vitaminA2AA2-A2Ans--retinylA2ester

ChronicA2intakeA2ofA2retinolA2mayA2contributeA2toA2-A2Ans--
developmentA2ofA2osteoporoticA2hipA2fractures

ActiveA2formA2ofA2VitaminA2DA2-A2Ans--Calcitriol

ParathyroidA2hormoneA2increases/decreasesA2bloodA2calciumA2levelsA2-A2Ans--Increases

MostA2activeA2andA2naturallyA2occurringA2formA2ofA2vitaminA2EA2-A2Ans--
RRRA2isomerA2ofA2Alpha-tocopherol

WhatA2vitaminA2isA2synthesizedA2byA2microfloraA2inA2distalA2smallA2intestineA2andA2colon?
A2-A2Ans--VitaminA2K


WhereA2areA2menaquinonesA2(K2)A2found?A2-A2Ans--fishA2oilA2andA2meats

WarfarinA2increases/decreasedA2theA2INRA2whileA2vitaminA2KA2increases/
decreasesA2theA2INRA2-A2Ans--WarfarinA2increases;A2vitaminA2KA2decreases

TherapeuticA2INRA2valueA2-A2Ans--betweenA22-3

WhatA2vitaminA2canA2beA2foundA2inA2propofolA2andA2lipids?A2-A2Ans--VitaminA2K