EXAM 3 MILES QUESTIONS AND CORRECT ANSWERS

EXAM 3 MILES QUESTIONS AND
CORRECT ANSWERS
catalyticA2triadA2-A2Ans--Ser,A2His,A2Asp

numberingA2ofA2catalyticA2triadA2-A2Ans--His-157
Asp-102
Ser-195

enzymologistsA2numberA2theA2triadA2usingA2theA2_______________A2modelA2-A2Ans--
chymotrypsin

WhyA2isA2honeyA2lessA2sweetA2whenA2hot?A2-A2Ans--fA2youA2heatA2theA2β-D-
fructopyranoseA2youA2will
accelerateA2theA2interconversionA2ofA2formsA2whichA2favorsA2theA2moreA2stableA2β-D-
fructofuranose

IncreasingA2theA2chainA2lengthsA2ofA2saturatedA2fattyA2acids.A2-A2Ans--
IncreasesA2theA2meltingA2point,A2decreasesA2fluidity

IncreasingA2theA2numberA2ofA2doubleA2bondsA2inA2unsaturatedA2fattyA2acids.A2-A2Ans--
DecreasesA2theA2meltingA2point,A2increasesA2fluidity

ChangingA2aA2cisA2doubleA2bondA2inA2aA2fattyA2acidA2toA2aA2transA2doubleA2bondA2-A2Ans--
IncreasesA2theA2meltingA2point,A2decreasesA2fluidity

ListA2theA2majorA2biologicalA2functionsA2ofA2triacylglycerols.A2-A2Ans--
1.)A2EnergyA2source.A2
2.)A2EnergyA2storageA2
3.)A2InsulationA2
4.)A2GenerationA2ofA2MetabolicA2Water

WhichA2ofA2theA2glycerophospholipidsA2haveA2aA2netA2positiveA2chargeA2atA2physiologicalA
2pH?A2-A2Ans--
NoneA2ofA2theA2glycerophospholipidsA2haveA2aA2netA2positiveA2chargeA2atA2physiologicalA2
pH.

WhichA2ofA2theA2glycerophospholipidsA2areA2neutralA2atA2physiologicalA2pH?A2-A2Ans--
Phosphatidylcholine
phosphatidylethanolamine

WhichA2ofA2theA2glycerophospholipidsA2haveA2aA2netA2negativeA2chargeA2atA2physiological
A2pH?A2-A2Ans--Phosphatidate(-2)A2
cardiolipin(A2-2)