Modulel 3:l BIODl 101/l BIOD101l (Latestl
2025/l 2026l Update)l Essentiall Biologyl Il
W/Labl |l Questionsl &l Answers|l Gradel A|l
100%l Correctl (Verifiedl Solutions)-l
Portagel Learning
Q:l Truel orl False:l Thel electronl transportl chainl isl anl anabolicl pathway.
Answer:
False;l thel electronl transportl chainl isl catabolicl pathway
Q:l Howl doesl thel electronl transportl chainl generatel ATP?
Answer:
Notably,l thel ETCl doesl notl directlyl producel anyl ATP.l However,l establishingl
al protonl gradientl acrossl thel mitochondriall membranel willl leadl tol thel
productionl ofl ATPl vial ATPl synthase
Q:l Explainl thel processl ofl oxidativel phosphorylation.
Answer:
Oxidativel phosphorylationl isl thel processl ofl generatingl ATPl vial al two-stepl
processl thatl involvesl (1)l thel oxidationl ofl thel high-energyl endl productsl
, NADHl andl FADH2l froml thel CACl andl (2)l thel phosphorylationl andl
conversionl ofl ADPl intol ATP
Q:l Whatl rolel dol electronl carriersl playl inl thel electronl transportl chainl andl
whatl arel thel 3l electronl carriersl ofl thel chain?
Answer:
Electronl carriersl experiencel changesl inl electronegativityl asl theyl acceptl
(reduced)l andl thenl donatel (oxidized)l electrons.l Ubiquinone,l cytochromes,l
andl oxygenl arel thel electronl carriersl ofl thel electronl transportl chain
Q:l Whatl isl thel rolel ofl ATPl synthasel inl thel electronl transportl chain?
Answer:
Thel ATPl synthasel isl responsiblel forl generatingl ATPl throughl chemiosmosis.l
Chemiosmosisl isl anl energy-couplingl processl whichl harnessesl thel energyl
thatl existsl withinl thel protonl ionl gradientl andl usesl itl tol drivel ATPl
synthesis
Q:l Whatl arel thel twol mainl formsl ofl fermentation?
Answer:
Fermentationl isl thel catabolicl processl ofl breakingl downl glucosel forl energyl
andl canl bel dividedl intol twol mainl formsl (1)l alcoholl fermentationl andl (2)l
lacticl acidl fermentation
2025/l 2026l Update)l Essentiall Biologyl Il
W/Labl |l Questionsl &l Answers|l Gradel A|l
100%l Correctl (Verifiedl Solutions)-l
Portagel Learning
Q:l Truel orl False:l Thel electronl transportl chainl isl anl anabolicl pathway.
Answer:
False;l thel electronl transportl chainl isl catabolicl pathway
Q:l Howl doesl thel electronl transportl chainl generatel ATP?
Answer:
Notably,l thel ETCl doesl notl directlyl producel anyl ATP.l However,l establishingl
al protonl gradientl acrossl thel mitochondriall membranel willl leadl tol thel
productionl ofl ATPl vial ATPl synthase
Q:l Explainl thel processl ofl oxidativel phosphorylation.
Answer:
Oxidativel phosphorylationl isl thel processl ofl generatingl ATPl vial al two-stepl
processl thatl involvesl (1)l thel oxidationl ofl thel high-energyl endl productsl
, NADHl andl FADH2l froml thel CACl andl (2)l thel phosphorylationl andl
conversionl ofl ADPl intol ATP
Q:l Whatl rolel dol electronl carriersl playl inl thel electronl transportl chainl andl
whatl arel thel 3l electronl carriersl ofl thel chain?
Answer:
Electronl carriersl experiencel changesl inl electronegativityl asl theyl acceptl
(reduced)l andl thenl donatel (oxidized)l electrons.l Ubiquinone,l cytochromes,l
andl oxygenl arel thel electronl carriersl ofl thel electronl transportl chain
Q:l Whatl isl thel rolel ofl ATPl synthasel inl thel electronl transportl chain?
Answer:
Thel ATPl synthasel isl responsiblel forl generatingl ATPl throughl chemiosmosis.l
Chemiosmosisl isl anl energy-couplingl processl whichl harnessesl thel energyl
thatl existsl withinl thel protonl ionl gradientl andl usesl itl tol drivel ATPl
synthesis
Q:l Whatl arel thel twol mainl formsl ofl fermentation?
Answer:
Fermentationl isl thel catabolicl processl ofl breakingl downl glucosel forl energyl
andl canl bel dividedl intol twol mainl formsl (1)l alcoholl fermentationl andl (2)l
lacticl acidl fermentation
