BIOLl 1107l Examl 2l l Principlesl ofl

BIOLl 1107l Examl 2l –l Principlesl ofl Biologyl Il (Latestl 2026/l 2027l Update)l Guide|l 100%l Verifiedl Questionsl &l Answersl |l Gradel A

Q:l exergonicl reactions

Answer:

-releasel freel energyl (-l Deltal G) -productsl containl lessl freel energyl thanl reactants

Q:l endergonicl reactions

Answer:

-productsl containl morel freel energyl thanl thel reactsnts -positivel deltal G

Q:l Metabolicl pathway

Answer:

seriesl ofl reactionsl inl whichl thel productsl ofl onel reactionl arel usedl asl reactantsl forl thel nextl reaction

Q:l catabolicl pathway

Answer:

-l negativel deltal G -al typel ofl metabolicl pathway -chemicall energyl isl releasedl byl thel breakdownl ofl complexl moleculesl intol simplerl compounds 1 / 4

-ex:l cellularl respiration

Q:l anabolicl pathway

Answer:

-positivel deltal G -typel ofl metabolicl pathway -chemicall energyl isl usedl tol buildl complicatedl moleculesl froml simplerl ones

-ex:l photosynthesis

Q:l ATP

Answer:

-al nucletoide -buildingl blockl ofl RNA -helpsl cellsl supplyl chemicall energyl tol drivel endergonicl reactions -containsl largel amountsl ofl freel energyl becausel ofl itsl highl energyl phosphatel bonds

Q:l structurel ofl ATP

Answer:

fivel carbonl sugarl ribosel linkedl tol thel nitrogenousl basel adeninel andl al chainl ofl 3l phosphatel groups

Q:l whatl happensl ifl youl movel one,l two,l orl threel ofl thel phosphatel groupsl inl ATP

Answer:

itl isl al spontaneousl reactionl andl itl releasesl energyl (hydrolysis)

Q:l breakdownl ofl ATPl is

Answer:

hydrolysis 2 / 4

Q:l Importancel ofl enzymesl inl al metabolicl pathway

Answer:

-speedl ofl al reactionl canl bel altered -canl reducel Eal andl acceleratel reactions

Q:l Eal (Activiationl energy)

Answer:

getsl al reactionl tol startl andl bringsl itl tol thel transitionl phasel wherel bondsl arel unstablel andl arel readyl tol bel broken

Q:l catalyst

Answer:

chemicall agentl thatl acceleratesl thel ratel ofl al reactionl withoutl itselfl beingl chargedl byl thel reaction

Q:l mostl commonl formsl ofl catalysist

Answer:

proteinsl calledl ENZYMES

Q:l Thel ______l thel Eal barrierl thel _____l thel reactionl willl proceed

Answer:

greater;l slower

Q:l dol enzymesl alterl thel changel inl freel energy

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Answer:

NO

Q:l ENZYMESl DO:

ENYMESl DONT:

Answer:

DO:l increasel thel ratel ofl spontaneousl (exergonic)l reactionsl byl decreasingl thel Ea DONT:l supplyl freel energy,l makel anl endergonicl reactionl proceedl spontaneously,l changel thel deltal Gl ofl al rection

Q:l substrate

Answer:

thel reactantl onl whichl anl enzymel acts

Q:l Relationshipl betweenl mitochondrial andl ATP

Answer:

ATPl formsl inl mitochondrial asl al partl ofl thel reactionsl ofl cellularl respiration

Q:l cellularl respiration

Answer:

collectionl ofl metabolicl reactionsl thatl breaksl downl foodl moleculesl tol producel energyl inl thel forml ofl ATP

Q:l 4l celll components

Answer:

plasmal membrane,l DNA,l cytoplasm,l ribosomesl (RNAl andl Protein)

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