UIUC IB 150 FINAL EXAM QUESTIONS AND CORRECT ANSWERS

UIUC IB 150 FINAL EXAM QUESTIONS AND CORR




List cthe cfive ccharacteristics call corganisms con cEarth cshare c- cCORRECT cANS✔✔1. cEnergy c
2. cCells c
3. cInformation c(Regulates creactions/Info cfrom cthe cenvironment)
4. cReplication
5. cEvolution

Explain cwhy cthe cfirst cfour care crequired cfor clife c- cCORRECT cANS✔✔-to cstay calive cand creprod
-cells cto cgrow; cmembrane cregulates cthe cpassage cof cmaterials cb/w cexterior cand cinterior cspace
-genetic cinformation, cresponding cto cthe cenvironment, cand cadjust cto cmaintain chomeostasis
-population ccontinues cto cevolve

Understand chow cthe cability cto cperform cwork cis crelated cto cbeing calive c- cCORRECT cANS✔✔if c
cto cdo cwork cthen cit cdies c(moves cto cstate cof cequilibrium) cand ceventually call cyour ccells cwill cdie
cstay calive


First cLaw cof cThermodynamics c- cCORRECT cANS✔✔Energy ccannot cbe ccreated cnor cdestroyed

Second cLaw cof cThermodynamics c- cCORRECT cANS✔✔Gibbs cFree cEnergy- cG=H-TS; cno cener
cefficient


Use cthe cFirst cLaw cof cThermodynamics cto cexplain chow cchemical creactions ctransfer cenergy cfro
cCORRECT cANS✔✔Because cenergy ccan cneither cbe ccreated cnor cdestroyed, cwhen cone cmolec
cmolecules cmust cuse cthat cenergy.


Understand chow cmolecules cstore cchemical cpotential cenergy c- cCORRECT cANS✔✔stored cin cC-

Use cthe c2nd claw cof cthermodynamics cto cpredict cwhether ca cprocess cis cexergonic cor cendergoni
cspontaneously cor cnot cby cqualitatively capplying cthe cequation cG=H-TS c- cCORRECT cANS✔✔Ch
callows cus cto cpredict cwhether ca creaction cwill coccur con cits cown cor crequire cenergy cto cbe cadded


Define cexergonic cand cendergonic cchemical creactions c- cCORRECT cANS✔✔Exergonic- crelease
c0

, Use cthe cconcepts cof cenergetically-coupled creactions cto cexplain chow cATP cdoes cwork cin cthe cce
cphosphorylation, cand cclassify cthe csub-reactions cduring cphosphorylation cas ceither cendergonic co
cANS✔✔Phosphorylation cadds ca cphosphate cgroup cfrom cATP cto cthe csubstrate cwhich cresults cin
cthat craise cthe cPE cproviding cenergy cfor cfurther creactions cactivates cenzymes


Differentiate cand crelate cthe croles cof cglucose cand cATP cin ccellular crespiration c- cCORRECT cAN
cshelf clife c& cyour cbody cneeds c~20lbs cof cATP ceach cday cin corder cto ccarry cout cthe cnecessary c
glucose ccan cbe cstored cfor clonger

Overall cequation cfor ccellular crespiration c- cCORRECT cANS✔✔C6H12O6 c+ c6CO2 c--> c6O2 c+ c6

list cthe c4 cmajor creactions cof ccellular crespiration cand cthe cinputs cand coutputs cof ceach c- cCORR
cinputs: cglucose, cATP, cNAD+, cADP;
outputs: cADP, cNADH, cATP, cpyruvate
-pyruvate cprocessing- cinputs: cpyruvate c& cNAD+
outputs: cCO2, cAcetyl cCoA, cNADH
-citric cacid ccycle- cinputs: cAcetyl cCoA, cNAD+, cADP, cPi, cFAD
outputs: cCoA, cNADH, cCO2, cATP, cFADH2
-ETC- cinputs: cNADH, cFADH2, cADP, cP, cO2
outputs: cNAD+, cFADH, cH2O, cATP

Identify cthe clocations cwithin ca ceukaryotic ccell cwhere ceach cof cthe cmajor cpathways cof ccellular cr
cCORRECT cANS✔✔Cytoplasm- cglycolysis c& cpyruvate cprocessing
Mitochondria- ccitric cacid ccycle, cETC, cATP csynthase

Trace cthe cflow cof cenergy cfrom cchemical cpotential cenergy cin cC-H cbonds cof cglucose cto cATP cp
cANS✔✔glycoysis c(2ATP) c-> cpyruvate cprocessing c-> ccitric cacid ccycle c(2ATP) c-> cETC c(28-32A


Identify cin cwhich csteps cof ccellular crespiration cATP cis cproduced, cand cwhich cstep cis cresponsible
cproduction cduring ccellular crespiration c- cCORRECT cANS✔✔Vast cbulk cis cfrom cETC/ATP csyntha


Understand cthe crole cof coxygen cin ccellular crespiration c- cCORRECT cANS✔✔Oxygen cis can celec

Describe cthe crole cof ccellular crespiration cin cthe ctransfer cof cenergy cfrom cglucose cto cwork cdone
cANS✔✔cellular crespiration cproduces cATP cwhich cprovides cenergy cfor cthe ccell cin corder cfor cit cd


Predict cwhat cthe cconsequences care cfor can corganism cfollowing cdisruption cof cany cmajor creactio
crespiration c- cCORRECT cANS✔✔Disruption cof cmajor creaction cpathways ccauses cthe ccells cto cn
cwork, cthe ccell cwill cdie


Differentiate cb/w caerobic cand canaerobic ccellular crespiration cand cfermentation c- cCORRECT cAN
cin cETC
Anaerobic- cno coxygen, cuse cH2, cH2S, cCH4 c& cNO3 c(instead cof cglucose), c& cSO4

Justify cwhy csome corganisms cwould cuse caerobic ccellular crespiration cand cothers cwould cuse cana
c(anaerobic ccellular crespiration cor cfermentation) c- cCORRECT cANS✔✔Life cwithout coxygen- cuse
cfinal celectron cacceptor cinstead cof coxygen
anaerobic ccannot cmake cas cmuch cATP cbecause cthe cacceptors care cnot cas celectronegative cas c
cslower cat cmoving celectrons. cthis cis cused cwhen corganisms clive cin coxygen-deficient cenvironmen
cour cintestines)


Distinguish cb/w cfacultative cand cobligate canaerobic corganisms c- cCORRECT cANS✔✔Facultative
caerobic ccellular crespiration cand csome cform cof canaerobic crespiration
Obligate- canaerobes ccan conly cuse canaerobic cgrowth, ccannot cuse coxygen; clikely coperate cusing
cto cthose cof cthe cearliest corganisms