Complex IV and Electron Flow in Respiratory Chain
30 Questions
1 Views
3.7 Stars

Complex IV and Electron Flow in Respiratory Chain

Created by
@FatihSultanMehmet

Questions and Answers

Where is the phospholipid cardiolipin concentrated?

Inner mitochondrial membrane

Which component of the respiratory chain is also a part of the Krebs cycle?

Complex II

Where are the mobile components of the respiratory chain located?

Inner mitochondrial membrane

What is the final result when electrons flow through the respiratory chain?

<p>Reduction of O2 to H2O</p> Signup and view all the answers

Which protein complex is responsible for transferring electrons from NADH to Ubiquinone?

<p>Complex I</p> Signup and view all the answers

What is the role of Cytochrome c in the respiratory chain?

<p>Transferring electrons from Complex III to Complex IV</p> Signup and view all the answers

What is the role of ATP synthase in the electron transport chain?

<p>Synthesizing ATP using the electrochemical potential difference</p> Signup and view all the answers

Which component acts as the 'receptionist' of the respiratory chain?

<p>Coenzyme Q</p> Signup and view all the answers

Where does the flow of electrons in the respiratory chain ultimately lead to?

<p>O2 (final electron acceptor)</p> Signup and view all the answers

What is the main function of Fe, S, and Cu ions in the electron transport chain complexes?

<p>Accelerating/facilitating electron flow</p> Signup and view all the answers

How many places in the respiratory chain pump protons into the intermembrane space?

<p>3</p> Signup and view all the answers

Which phase of the respiratory chain involves the formation of water as a result of electron flow to O2?

<p>Oxidative phosphorylation</p> Signup and view all the answers

Where does the electron pair carried by NADH+H+ enter the respiratory chain?

<p>Complex I</p> Signup and view all the answers

Where does the electron pair carried by FADH2 enter the respiratory chain?

<p>Complex II</p> Signup and view all the answers

How many protons are pumped into the intermembrane space when an electron pair enters via NADH+H+?

<p>10</p> Signup and view all the answers

How many protons are pumped into the intermembrane space when an electron pair enters via FADH2?

<p>6</p> Signup and view all the answers

What is the primary function of NADH+H+ in glycolysis?

<p>To regenerate NAD+ for continued glycolysis</p> Signup and view all the answers

Why can't NADH+H+ directly traverse the mitochondrial inner membrane?

<p>The membrane is impermeable to charged molecules</p> Signup and view all the answers

What is the relationship between ATP formation and substrate oxidation in the context of oxidative phosphorylation?

<p>1 mole of the substrate oxidized forms 1.5 mol of ATP</p> Signup and view all the answers

What role does FADH2 play in oxidative phosphorylation?

<p>Serves as a cofactor in some reactions involving ATP synthesis</p> Signup and view all the answers

How does the availability of ADP impact the respiration rate of mitochondria?

<p>Higher ADP availability leads to higher respiration rates</p> Signup and view all the answers

Which specialized carrier is responsible for transporting ADP and Pi into mitochondria for ATP resynthesis?

<p>Adenine nucleotide translocase</p> Signup and view all the answers

What is the main purpose of the Malate-Aspartate Shuttle system?

<p>To transport electrons from the cytosol to the respiratory chain</p> Signup and view all the answers

Which enzyme is responsible for converting malate into oxaloacetate in the Malate-Aspartate Shuttle system?

<p>Cytosolic malate dehydrogenase</p> Signup and view all the answers

What does the coupling of oxidation and phosphorylation imply in oxidative phosphorylation?

<p>Oxidation cannot proceed without concomitant phosphorylation</p> Signup and view all the answers

Which protein is involved in importing ADP into the mitochondrial matrix while exporting ATP out?

<p>Adenine nucleotide translocase</p> Signup and view all the answers

Where is the Glycerol 3-P Shuttle system mainly active?

<p>Skeletal muscle</p> Signup and view all the answers

What is the role of dihydroxyacetone phosphate in the Glycerol 3-P Shuttle system?

<p>To accept reducing equivalents from NADH+H</p> Signup and view all the answers

Which part of the mitochondria is responsible for reducing matrix NADs into NADH+Hs in the Malate-Aspartate Shuttle system?

<p>Mitochondrial matrix</p> Signup and view all the answers

Which system allows for the continuity of anaerobic glycolysis by producing empty batteries (NAD+)?

<p>Glycolysis in the cytosol</p> Signup and view all the answers

More Quizzes Like This

Complex Numbers Quiz
5 questions

Complex Numbers Quiz

FoolproofStrength avatar
FoolproofStrength
Complex Numbers Basics
6 questions

Complex Numbers Basics

AccurateEclipse avatar
AccurateEclipse
Use Quizgecko on...
Browser
Browser