BMS 532 EXAM 3 STUDY QUESTIONS AND CORRECT ANSWERS

BMS 532 EXAM 3 STUDY QUESTIONS
AND CORRECT ANSWERS
TheA2fattyA2acidA2chainsA2foundA2inA2foodsA2andA2bodyA2tissuesA2rangeA2fromA2________
_A2carbonA2atoms.A2-A2Ans--4-24

Carbon-carbonA2doubleA2bondsA2inA2theA2transA2formA2-A2Ans--
extendA2theA2fattyA2acidA2intoA2aA2linearA2shape

TheA2conversionA2ofA2linoleicA2acidA2(C18:2)A2toA2arachidonicA2acidA2(C20:4)A2involvesA2t
heA2additionA2ofA22A2carbonsA2toA2theA2methylA2endA2andA22A2doubleA2bondsA2atA2theA2n-
3A2andA2n-6A2positionsA2ofA2theA2omegaA2end.A2-A2Ans--False

EssentialA2fattyA2acidsA2areA2classifiedA2asA2suchA2becauseA2weA2cannotA2synthesizeA2th
emA2fromA2otherA2fattyA2acidsA2andA2theyA2areA2requiredA2forA2theA2synthesisA2ofA2prostagl
andins.A2-A2Ans--True

WhichA2fattyA2acidA2isA2consideredA2essentialA2andA2mustA2beA2suppliedA2byA2theA2diet?A2-
A2Ans--linoleicA2acid


SpellA2outA2SFAA2-A2Ans--saturatedA2fattyA2acids

SpellA2outA2DHAA2-A2Ans--docosahexaenoicA2acid

SpellA2outA2EPAA2-A2Ans--eicosapentaenoicA2acids

SpellA2outA2PUFAA2-A2Ans--polyunsaturatedA2fattyA2acids

NameA2atA2leastA2twoA2physiologicallyA2importantA2steroidsA2fromA2cholesterolA2inA2theA2b
odyA2(whatA2canA2cholesterolA2beA2convertedA2to?)A2-A2Ans--
sexA2hormones,A2bileA2acids,A2corticosteroidA2hormones,A2vitaminA2D

SphingomyelinsA2areA2importantA2phospholipidsA2inA2theA2_________A2-A2Ans--
myelinA2sheathA2ofA2nerves

PhospatidylinositolA2isA2aA2membraneA2phospholipidA2thatA2canA2anchorA2surfaceA2protei
nsA2toA2theA2plasmaA2membrane.A2-A2Ans--True

WhatA2isA2theA2mostA2commonA2lipidA2characterizedA2byA2aA2four-ringA2structure?A2-
A2Ans--cholesterol


PhospatidylinositolA2isA2aA2membraneA2phospholipidA2thatA2canA2createA22A2secondA2mes
sengersA2inA2cellA2signaling.A2-A2Ans--True

, OneA2ofA2theA2primaryA2functionsA2ofA2aA2phospholipidA2isA2dueA2toA2itsA2structure,A2allowi
ngA2itA2toA2beA2bothA2hydrophobicA2andA2hydrophilic.A2-A2Ans--True

AllA2ofA2theA2followingA2areA2requiredA2forA2fatA2digestionA2EXCEPTA2_______A2-A2Ans--
lysolecithin

WhichA2ofA2theA2followingA2lipoproteinsA2isA2theA2majorA2carrierA2ofA2cholesterolA2toA2tissu
esA2forA2useA2inA2constructionA2ofA2membranesA2orA2steroidA2hormones?A2-A2Ans--LDL

WhatA2organA2providesA2theA2majorA2siteA2forA2lipoproteinA2formationA2fromA2exogenously
A2derivedA2lipids?A2-A2Ans--intestine


OnceA2aA2micelle,A2containingA2lipidsA2andA2lipid-
solubleA2compounds,A2entersA2theA2enterocyte,A2itA2isA2referredA2toA2asA2aA2chylomicron.A
2-A2Ans--False


WhatA2isA2theA2functionA2ofA2lipoproteinA2lipase?A2-A2Ans--
digestingA2lipidsA2inA2theA2bloodA2toA2deliverA2lipidsA2toA2tissues

Adipocytes'A2primaryA2functionA2isA2toA2storeA2fatA2asA2triacylglycerol;A2thusA2theyA2doA2no
tA2requireA2glycolysis/theA2TCAA2cycleA2forA2energyA2needs.A2-A2Ans--False

InA2whatA2formA2isA2mostA2bodyA2fatA2stored?A2-A2Ans--triacylglycerols

TheA2keyA2organA2inA2clearingA2(i.e.,A2breakingA2down)A2lipoproteinsA2isA2theA2liver.A2-
A2Ans--True


WhatA2isA2theA2carrierA2forA2short-chainA2fattyA2acidsA2inA2portalA2circulation?A2-A2Ans--
albumin

KetogenesisA2wouldA2beA2theA2HIGHEST:A2-A2Ans--duringA2prolongedA2starvation

KetonesA2areA2producedA2from:A2-A2Ans--acetyl-CoA

WhichA2ketoneA2bodyA2isA2excretedA2throughA2lung?A2-A2Ans--acetone

WhatA2organA2providesA2theA2majorA2siteA2forA2lipoproteinA2formationA2fromA2endogenousl
yA2derivedA2lipids?A2-A2Ans--liver

AbnormalA2LDLA2receptorsA2failA2toA2removeA2cholesterolA2fromA2theA2bloodstreamA2resul
tingA2inA2familialA2hypercholesterolemia.A2HowA2manyA2differentA2geneticA2mutationsA2inA2
theseA2receptorsA2haveA2beenA2identifiedA2toA2date?A2-A2Ans--10

WhatA2isA2formedA2whenA2fattyA2acidsA2areA2oxidizedA2inA2theA2mitochondriaA2(i.e.A2whatA2
isA2theA2endA2productA2ofA2beta-oxidation)?A2-A2Ans--acetylA2CoA