fermentationl orl respiration,l andl finallyl throughl l thel electronl transportl

Q:l Thel catabolisml ofl al singlel moleculel ofl glucosel goesl throughl whatl

threel distinctl transitions?

Answer:

Thel breakdownl ofl glucosel goesl throughl (1)l glycolysis,l thenl (2)l fermentationl orl respiration,l andl finallyl throughl (3)l thel electronl transportl chain.

Q:l Whatl isl thel mostl energeticl transitionl inl thel catabolisml ofl glucose?

Answer:

Thel electronl transportl chainl yieldsl 34l ATPl whilel bothl glycolysisl andl fermentationl (orl respiration)l eachl yieldl onlyl 2l ATP.

Q:l Identifyl thel reactantsl ofl thel followingl chemicall equation:

Glucosel +l 2NAD+l ->l 2l NADHl +l 2l Pyruvatel +l 2ATP

Answer:

Thel reactantsl arel tol thel leftl ofl thel arrow:l Glucosel andl 2l NAD+.

BIOLl271l /l BIOL271l Modulel 2:l (Latestl

2026/l 2027l Update)l 100%l Verifiedl Questionsl &l Answersl |l Gradel A 1 / 4

Q:l Thel presencel ofl whatl moleculel 'signals'l tol thel celll thatl glycolysisl isl aboutl tol start?

Answer:

Glucose-6-phosphatel (G6P)

Q:l Truel orl False:l Inl thel absencel ofl oxygen,l fermentationl producesl onlyl 2l ATP.

Answer:

False.l

(Fermentationl onlyl reducesl NADHl backl tol NAD+.)

Q:l Whatl isl thel primaryl byproductl ofl thel TCAl cycle?

Answer:

Thel TCAl cyclel producesl anl abundancel ofl reducedl electronl carriersl (NADHl andl FADH2).

Q:l Truel orl False:l Thel reactantsl ofl thel TCAl cyclel directlyl enterl andl fuell thel electronl transportl system.

Answer: 2 / 4

False.l

(Thel productsl ofl thel TCAl cyclel (reducedl electronl carriers)l enterl andl drivel thel productionl ofl ATPl vial thel electronl transportl system.)

Q:l Describel thel relationshipl betweenl chloroplastsl andl chlorophyll.

Answer:

Bothl chloroplastsl andl chlorophylll arel associatedl withl photosynthesis.l Chloroplastsl arel thel doublel membrane-enclosedl organellesl thatl containl thel photosyntheticl pigmentl chlorophyll.

Q:l Truel orl False:l Chloroplastsl arel specificl tol algael andl plants.

Answer:

True

Q:l Thel processl ofl photophosphorylationl producesl what?

Answer:

ATPl andl NADPH

Q:l Matchl thel followingl reactionsl tol itsl correspondingl enzyme:

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A-Bl +l H2Ol ->l A-OHl +l B-H

A-Bl ->l Bl -l A

A+Bl ->l Al -l B

A-Bl ->l Al +l B

A-l +Bl ->l Al +l B-

Ab+Cl ->l Al +l Cb

Answer:

A-Bl +l H2Ol ->l A-OHl +l B-H Hydrolases

A-Bl ->l B-A Isomerases

A+Bl ->l A-B Ligases

A-Bl ->l Al +l B Lyases

A-l +Bl ->l Al +l B- Oxireductases

Ab+Cl ->l Al +l Cb Transferases

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