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Module 3: BIOD 101/ BIOD101 (Latest 2025/ 2026 Update) Essential Biology I W/Lab | Questions & Answers| Grade A| 100% Correct (Verified Solutions)- Portage Learning

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Module 3: BIOD 101/ BIOD101 (Latest 2025/ 2026 Update) Essential Biology I W/Lab | Questions & Answers| Grade A| 100% Correct (Verified Solutions)- Portage Learning QUESTION True or False: The electron transport chain is an anabolic pathway. Answer: False; the electron transport chain is catabolic pathway QUESTION How does the electron transport chain generate ATP? Answer: Notably, the ETC does not directly produce any ATP. However, establishing a proton gradient across the mitochondrial membrane will lead to the production of ATP via ATP synthase QUESTION Explain the process of oxidative phosphorylation. Answer: Oxidative phosphorylation is the process of generating ATP via a two-step process that involves (1) the oxidation of the high-energy end products NADH and FADH2 from the CAC and (2) the phosphorylation and conversion of ADP into ATP QUESTION What role do electron carriers play in the electron transport chain and what are the 3 electron carriers of the chain? Answer: Electron carriers experience changes in electronegativity as they accept (reduced) and then donate (oxidized) electrons. Ubiquinone, cytochromes, and oxygen are the electron carriers of the electron transport chain QUESTION What is the role of ATP synthase in the electron transport chain? Answer: The ATP synthase is responsible for generating ATP through chemiosmosis. Chemiosmosis is an energy-coupling process which harnesses the energy that exists within the proton ion gradient and uses it to drive ATP synthesis QUESTION What are the two main forms of fermentation? Answer:

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  • biod101biod 101biod 101 biod101 module
  • biod101biod 101biod 101 biod101 module 1
  • biod101biod 101biod 101 biod101 module 2
  • biod101biod 101biod 101 biod101 module 3
  • biod101biod 101biod 101 biod101 module

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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
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