BCH 4053 Exam 1 Key Points Questions With Correct Answers.

BCH 4053 Exam 1 Key Points Questions
With Correct Answers
Thermodynamics ||- ||CORRECT ||ANSWER✔✔-Study ||of ||energy ||and ||its ||effects ||on ||matter



In ||most ||biochemical ||systems ||enthalpy ||is ||- ||CORRECT ||ANSWER✔✔-equivalent ||with ||heat



Standard ||conditions ||- ||CORRECT ||ANSWER✔✔-Temp ||at ||25, ||pressure ||at ||1 ||atm, ||pH ||7.0



Enzymes ||increase ||the ||rates ||of ||______________ ||reactions ||- ||CORRECT ||ANSWER✔✔-
thermodynamically ||favored



First ||law ||of ||thermodynamics ||- ||CORRECT ||ANSWER✔✔-Energy ||is ||conserved



Energy ||change ||of ||the ||system ||is ||- ||CORRECT ||ANSWER✔✔-Difference ||between ||the ||heat
||absorbed ||by ||the ||system ||from ||the ||surroundings ||and ||work ||done ||by ||the ||system ||on ||the


||surroundings




Change ||in ||energy ||or ||(delta)U= ||- ||CORRECT ||ANSWER✔✔-Ufinal-Uinitial ||or

q-w



A ||spontaneous ||process ||occur ||- ||CORRECT ||ANSWER✔✔-without ||the ||input ||of ||additional
||energy ||from ||outside ||the ||system




Second ||law ||of ||thermodynamics ||- ||CORRECT ||ANSWER✔✔-spontaneous ||processes ||are
||characterized ||by ||the ||conversion ||of ||order ||to ||disorder

, (delta)Ssystem+(delta)Ssurroundings= ||- ||CORRECT ||ANSWER✔✔-(delta)Suniverse



(delta)G= ||- ||CORRECT ||ANSWER✔✔-(delta)H-T(delta)S



Exergonic ||reactions ||- ||CORRECT ||ANSWER✔✔-Spontaneous ||reactions

have ||a ||-(delta)G



Endergonic ||- ||CORRECT ||ANSWER✔✔-Non ||spontaneous ||reactions ||

have ||a ||+(delta)G



-(delta)H ||and ||+(delta)S ||indicate ||- ||CORRECT ||ANSWER✔✔-reactions ||is ||exothermic, ||exergonic
||at ||all ||temps




-(delta)H ||and ||-(delta)S ||indicate ||- ||CORRECT ||ANSWER✔✔-enthalpy ||favored, ||entropy
||opposed, ||only ||spontaneous ||if ||(delta)S ||is ||larger ||and ||below ||T=H/S




+(delta)H ||and ||+(delta)S ||indicate ||- ||CORRECT ||ANSWER✔✔-Reaction ||is ||endothermic

spontaneous ||if ||above ||T=H/S



+(delta)H ||and ||-(delta)S ||indicate ||- ||CORRECT ||ANSWER✔✔-Endergonic ||and ||nonspontaneous



(delta)G0= ||- ||CORRECT ||ANSWER✔✔-=RTlnKeq



Isolated ||systems ||- ||CORRECT ||ANSWER✔✔-cannot ||exchange ||matter ||or ||energy ||with ||their
||surrounding