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NUTR 437 EXAM 3 (LIPIDS) QUESTIONS AND CORRECT ANSWERS

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NUTR 437 EXAM 3 (LIPIDS) QUESTIONS AND CORRECT ANSWERS

Institution
MMSC 407
Course
MMSC 407

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NUTR 437 EXAM 3 (LIPIDS) QUESTIONS
AND CORRECT ANSWERS
LipidA2FunctionsA2includeA2-A2Ans--CellA2membraneA2structureA2(phospholipids/
cholesterol)
EnergyA2sourceA2andA2storage:A2veryA2efficientA2(ketones,A2LCFA,A2TAGs)
HormonesA2andA2VitaminsA2(sexA2hormones/fatA2solubleA2vit.)
InsulationA2andA2protectionA2forA2vitalA2organs
SatietyA2(delaysA2gastricA2secretions/digestion)

AccordingA2toA2theA2DeltaA2andA2OmegaA2nomenclatureA2systems,A2whatA2isA2thisA2molec
ule:A2
CH3-(CH2)4-CH=CH-CH2-CH=CH-(CH2)7-COOHA2-A2Ans--
18:2A2"delta"A29,12A2orA218:2A2n-6

WhatA2areA2theA2characteristicsA2ofA2SaturatedA2andA2UnsaturatedA2fatA2meltingA2points?
A2-A2Ans--
SaturatedA2fat:A2meltingA2pointA2isA2highA2andA2positivelyA2correlatedA2toA2numberA2ofA2car
bonsA2(solidsA2atA2roomA2temp.)
UnsaturatedA2fat:A2meltingA2pointA2isA2lowA2andA2negativelyA2correlatedA2toA2doubleA2bond
sA2(liquidA2atA2roomA2temp.)

NameA22A2EssentialA2FattyA2AcidsA2andA2theirA2nomenclaturesA2-A2Ans--OmegaA2-
6A2(Linoleic)A218:2A2n-6
OmegaA2-3A2(alpha-linolenic)A218:3A2n-3
*weA2cannotA2produceA2theseA2ourselvesA2asA2fishA2andA2plantsA2can.A2weA2canA2onlyA2pr
oduceA2doubleA2bondsA2upA2toA2delta9

EicosanoidsA2-A2Ans--hormone-likeA2compoundsA2synthesiedA2fromA2EFA's.A2
Prostaglandins,A2Leukotrienes,A2thromboxanes
VeryA2shortA2lived,A2butA2manyA2functions

WhatA2isA2theA2differenceA2betweenA2PartiallyA2andA2FullyA2HydrogenatedA2foods?A2-
A2Ans--Partially=A2someA2transA2fatsA2generatedA2inA2theA2process
Fully=A2chemicalA2saturationA2ofA2doubleA2bondsA2toA2makeA2liquidsA2solid.

CompositionA2ofA2aA2phospholipidA2-A2Ans--PolarA2HeadA2groupA2(nitrogenA2compound)
phosphateA2group
Glycerol
2A2FattyA2AcidA2Chains

FunctionsA2ofA2PhospholipidsA2-A2Ans--Emulsiphication
CellA2Membranes

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Institution
MMSC 407
Course
MMSC 407

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Type
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