Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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option are

  • chemiosmosis
  • NADH, FADH2, and O2
  • ATP synthase
  • Proton-motive force
  • NAD+, FAD and H2O
Concept 9.4: During oxldative phosphorylation, chemlosmosis coupies ciectron transport to
ATP synthesis
• These two eiectron carriers donate electrons to the electron transport chain, which powers ATP
synthesis via oxidative phosphorylation.
• The Pathway of Electron Transport (Figure 8.13)
- The electran transport chain is in the
the chain's components are protelns, which exist in multiproten complexes. Electrons drop in
tree energy as they go down the chain and are finaly passed to
carriers aternate between reduced and axidized states as they accept and donate electrons.
(cristae) of the mitochondrion. Most of
forming H;0. Electran
Electrons are passed through a number of proteins ncluding cytochromes (each with an iron
atom) to O2. The electron transport chain generates
: Bummary Electron Transport Chain
• rputs
ATP directy.
Outputs:
Location:
• Chemiasmosis: The Energy-Coupling Mechanism (Figure 3.14)
- The energy released as electrons are passed down the electron transport chain Iis used to
pump H- trom the mitochondrial matrix to the Intermembrane space. H moves down ts
concentration gradient through ATP synthase, causing phosphorylation of ADP to ATP in
chemlosmosis (Rigure 9.15).
= ATP synthase is iocated in
: Proton-mative toree is the energy stored in H gradent.
• An Accounting of ATP Production by Cellular Respiraton (Figure 9.16)
- During celluiar respiration, most energy tlows in this sequence glucose - NADH – electron
transport chain - proton-motive force - ATP
- About 34% at the energy ina glucose molecule is transferred to ATP during celular
respration, making about 32 ATP. The rest ot the energy is lost as heat.
• There are three reasons why the number of ATP Is not known exacty.
: Phosphorylation and the redox reactions are not directiy coupled; the ratio of NADH to ATP
membrane.
molecules is not a whole number.
expand button
Transcribed Image Text:Concept 9.4: During oxldative phosphorylation, chemlosmosis coupies ciectron transport to ATP synthesis • These two eiectron carriers donate electrons to the electron transport chain, which powers ATP synthesis via oxidative phosphorylation. • The Pathway of Electron Transport (Figure 8.13) - The electran transport chain is in the the chain's components are protelns, which exist in multiproten complexes. Electrons drop in tree energy as they go down the chain and are finaly passed to carriers aternate between reduced and axidized states as they accept and donate electrons. (cristae) of the mitochondrion. Most of forming H;0. Electran Electrons are passed through a number of proteins ncluding cytochromes (each with an iron atom) to O2. The electron transport chain generates : Bummary Electron Transport Chain • rputs ATP directy. Outputs: Location: • Chemiasmosis: The Energy-Coupling Mechanism (Figure 3.14) - The energy released as electrons are passed down the electron transport chain Iis used to pump H- trom the mitochondrial matrix to the Intermembrane space. H moves down ts concentration gradient through ATP synthase, causing phosphorylation of ADP to ATP in chemlosmosis (Rigure 9.15). = ATP synthase is iocated in : Proton-mative toree is the energy stored in H gradent. • An Accounting of ATP Production by Cellular Respiraton (Figure 9.16) - During celluiar respiration, most energy tlows in this sequence glucose - NADH – electron transport chain - proton-motive force - ATP - About 34% at the energy ina glucose molecule is transferred to ATP during celular respration, making about 32 ATP. The rest ot the energy is lost as heat. • There are three reasons why the number of ATP Is not known exacty. : Phosphorylation and the redox reactions are not directiy coupled; the ratio of NADH to ATP membrane. molecules is not a whole number.
Question 6
Review Concept 9.4. Match the term and its description. Each term can only be used once.
electron transport chain inputs
[ Choose ]
This protein functions in phosphorylation of ADP to ATP.
[ Choose 1
An energy coupling mechanism that use the energy released as hydrogen across a
[ Choose 1
membrane to synthesis ATP
Energy stored in H+ gradient is
| Choose
expand button
Transcribed Image Text:Question 6 Review Concept 9.4. Match the term and its description. Each term can only be used once. electron transport chain inputs [ Choose ] This protein functions in phosphorylation of ADP to ATP. [ Choose 1 An energy coupling mechanism that use the energy released as hydrogen across a [ Choose 1 membrane to synthesis ATP Energy stored in H+ gradient is | Choose
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