mynursytest.store - Chapterm2:mPhysicalmBiochemistry:mEnergymConver...

mynursytest.store

DOWNLOADmTHEmTestmBankmformBiochemistry m1stmEditionmMiesfeld

Chapterm2:mPhysicalmBiochemistry:mEnergymConversion,mWater,mandmMembranes

LEARNING mOBJECTIVES 2.1 EnergymConversionminmBiologicalmSystems

2.1.a. Describemhowmsunlightmismthemsourcemofmallmenergy monmEarth.

2.1.b. Differentiatembetweenmautotrophsmandmheterotrophs.

2.1.c. Explainmthemrolemofmoxidation- reductionmreactionsminmbiologicalmsystems.

2.1.d. Differentiatembetweenmamsystemmandmitsmsurroundings .

2.1.e. Differentiatemamongmopen,mclosed,mandmisolate dmsystems.

2.1.f. Explainmthemfirstmlawmofmthermodynamicsmasmitmappl iesmtombiologicalmsystems.

2.1.g. Differentiatembetweenmendothermicmandmexothermi cmreactions.

2.1.h. Statemthemsecondmlawmofmthermodynamicsmasmitmappl iesmtombiologicalmsystems.

2.1.i. Explainmthemconceptmofmentropymandmitsmrole minmbiologicalmsystems.

2.1.j. DefinemGibbsmfreemenergy,mitsmrelationmtomenthalpyma ndmentropy,mandmitsmrelationmtomequilibrium.

2.1.k. Identifymthemimpactsmofmenthalpy,mentropy,ma ndmtemperaturemonmfreemenergy.

2.1.l. Differentiatembetweenmstandardmstatemconditionmandmt hembiochemicalmstandardmstate.

2.1.m. Differentiatembetweenmexergonicmandmendergoni cmreactionsmandmexplainmhowmsuchmreactionsmaremcoupl edminmbiologicalmsystems.

2.1.n. IdentifymthemcharacteristicsmofmthemATPmmolecule mthatmprovidemsuchmamlargemstandardmfreemenergymchange mformphosphoanhydridembondmcleavage.

2.1.o. Describemthemrelationshipmbetweenmenergymchargema ndmconcentrationsmofmATP,mADP,mandmAMP.

2.2 WatermIsmCriticalmformLifemProcesses

2.2.a. Identifymhydrogenmbondmdonorsmandmhydrogenmbo ndmacceptors.

2.2.b. Describemhowmanmantifreezemproteinmfunctions.

2.2.c. Differentiatemamongmhydrogenmbonds,mioni cminteractions,mandmvanmdermWaalsminteractions.

2.2.d. Statemthemconceptmofmthemhydrophobicmeffectmandmh owmitmimpactsmproteinmfolding.

2.2.e. Explainmthemimpactsmofmhypotonic,misotonic,ma ndmhypertonicmsolutionsmonmcells.

2.2.f. Identifymthemimportantmaspectsmofmplant,mfungi,ma ndmbacterialmcellsmthatmallowmthemmtomsurviveminmamhyp otonicmenvironment.

2.2.g. CalculatemthemconcentrationmofmH +m ormOH – m givenmthemOH –m ormH +m concentration.

2.2.h. RelatempHmtomthemconcentrationmofmH +m ormOH – .

2.2.i. Differentiatembetweenmweakmacidsmandmstrongmaci dsmandmbetweenmweakmbasesmandmstrongmbases.

2.2.j. RelatempHmtompKamusingmthemHenderson- Hasselbalchmequation.

2.3 CellmMembranesmFunctionmasmSelectivemHydrophobi cmBarriers

2.3.a. Identifymthemcharacteristicsmofmamphospholipidmth atmcontributemtommembranemformation.

2.3.b. Relatemthemdegreemofmsaturationminmphospholipidsm tomthemfluiditymofmthemmembrane.

2.3.c. Explainmthemvariousmwaysmcholesterolmimpac tsmmembranemstructure.

2.3.d. Differentiatemamongmthemdifferentmtypesmofmmembran esmfoundminmameukaryoticmcell. 1 / 3

DOWNLOADmTHEmTestmBankmformBiochemistry m1stmEditionmMiesfeld 1m mynursytest.store

Chapterm2:mPhysicalmBiochemistry:mEnergymConversion,mWater,mandmMembranes

MULTIPLE mCHOICE

• Energymconversionminmlivingmsystemsmismrequiredmformwhatmthreemtypesmofmwork?
• osmoticmwork,mchemicalmwork,mmechanicalmwork
• osmoticmwork,mchemicalmwork,mpotentialmwork
• kineticmwork,mchemicalmwork,mmechanicalmwork
• osmoticmwork,mphotosyntheticmwork,mmechanicalmwork

ANS:mA DIF: Easy REF:m2.1

OBJ:m2.1.a.mDescribemhowmsunlightmismthemsourcemofmallmenergymonmEart

h.mMSC:mRemembering

• Whatmchemicalmprocessmismablemtomtakemplaceminmthempresencemofmsolarmenergy?
• anaerobicmrespiration
• photosynthesis
• hydrogenation
• hydrolysis

ANS:mB DIF: Medium REF:m2.1

OBJ:m2.1.a.mDescribemhowmsunlightmismthemsourcemofmallmenergymonmEart

h.mMSC:mRemembering

• Whichmofmthemfollowingmismthemcorrectmsolarmenergymreactionmthatmtakesmplacemonmthemsun?
• 4mHem→m

4 He b.4 Hem→m4mHe

• 4mHm→m

4 He d.4 Hm→m4mH ANS:mC DIF: Medium REF:m2.1

OBJ:m2.1.a.mDescribemhowmsunlightmismthemsourcemofmallmenergymonmEart

h.mMSC:mUnderstanding

• WhatmismthemfinalmmoleculemmademfrommthemoxidationmofmH2Ombymsolarmenergy?
• ozone
• glucose
• fructose
• carbonmdioxide

ANS:mB DIF: Medium REF:m2.1

OBJ:m2.1.c.mExplainmthemrolemofmoxidation-

reductionmreactionsminmbiologicalmsystems.mMSC:mUnderstanding

• Themdifferencembetweenmanmoxidationmreactionmandmamreductionmreactionmismthatmoxidationmismthe

mandmreductionmismthem .

• lossmofmelectrons;mgainmofmelectrons
• gainmofmelectrons;mlossmofmelectrons
• lossmofmprotons;mgainmofmprotons
• gainmofmprotons;mlossmofmprotons

ANS:mA DIF: Medium REF:m2.1

OBJ:m2.1.c.mExplainmthemrolemofmoxidation-

reductionmreactionsminmbiologicalmsystems.mMSC:mAnalyzing 2 / 3

DOWNLOADmTHEmTestmBankmformBiochemistry m1stmEditionmMiesfeld 2m mynursytest.store

• Whichmofmthemfollowingmcorrectlymdescribesmthemrelationshipmbetweenmanmicemcubemmeltingmon

mthemtablemandmthemairmsurroundingmit?

• Themicemcubemismthemsystemmandmthemairmismthemsurroundings.
• Themairmismthemsystemmandmthemicemcubemismthemsurroundings.
• Themicemcubemismthemsystemmandmonlymthemairmismthemuniverse.
• Themairmismthemsystemmandmonlymthemicemcubemismthemuniverse.

ANS:mA DIF: Medium REF:m2.1

OBJ:m2.1.d.mDifferentiatembetweenmamsystemmandmitsmsurroundings.mM

SC:mEvaluating

• Whichmofmthemfollowingmismanmexamplemofmamsystem?
• themuniverse
• themair
• amtestmtubemwithmreactionmcomponents
• outermspace

ANS:mC DIF: Easy REF:m2.1

OBJ:m2.1.d.mDifferentiatembetweenmamsystemmandmitsmsurroundings.mM

SC:mUnderstanding

• Amhotmpackmonmyourmarmmismanmexamplemofmwhatmkindmofmsystem?
• open
• closed
• isolated
• surroundings

ANS:mB DIF: Medium REF:m2.1

OBJ:m2.1.e.mDifferentiatemamongmopen,mclosed,mandmisolatedmsystems.m

MSC:mApplying

• Whichmofmthemfollowingmbestmdescribesmanmopenmsystem?
• Mattermandmenergymaremfreelymexchangedmwithmthemsurroundings.
• Energymismexchangedmwithmthemsurroundingsmbutmmattermismnot.
• Mattermismexchangedmwithmthemsurroundingsmbutmenergymismnot.
• Neithermmattermnormenergymismexchangedmwithmthemsurroundings.

ANS:mA DIF: Easy REF:m2.1

OBJ:m2.1.e.mDifferentiatemamongmopen,mclosed,mandmisolatedmsystems.m

MSC:mUnderstanding

• Whichmofmthemfollowingmbestmdefinesmthemfirstmlawmofmthermodynamics?
• Allmspontaneousmprocessesminmthemuniversemtendmtowardmdispersalmofmenergy.
• Totalmamountmofmenergyminmthemuniversemismamconstant.
• TheremismnomentropymatmzeromKelvin.
• Entropymismammeasuremofmdisorder.

ANS:mB DIF: Medium REF:m2.1 OBJ:m2.1.f.mExplainmthemfirstmlawmofmthermodynamicsmasmitmappliesmtombiologicalmsystem

s.mMSC:mUnderstanding

• / 3