Are You a Complex I Expert?
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Questions and Answers

Which complex generates a net result of 4 protons transferred from the matrix to the intermembrane space of the mitochondria?

  • Complex I (correct)
  • Complex II
  • Complex IV
  • Complex III

Which complex is composed of a bound FAD and three Fe-S clusters?

  • Complex I
  • Complex III
  • Complex II (correct)
  • Complex IV

Which complex has two coenzyme Q binding sites and utilizes reduced coenzyme Q in two ways?

  • Complex II
  • Complex IV
  • Complex III (correct)
  • Complex I

Which complex generates two water molecules, the oxidation of four cytochrome c, and the translocation of two protons?

<p>Complex IV (A)</p> Signup and view all the answers

Which complex is an enzyme of the TCA cycle and generates a net result of the production of fumarate from succinate and reduction of one coenzyme Q located outside the complex within the inner mitochondrial membrane?

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

Which complex is composed of FMN, Coenzyme Q and Fe-S clusters and uses NADH as the initial electron donor?

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

Which complex is composed of cytochrome c1, cytochrome bL, cytochrome bH and a Fe-S Rieske protein?

<p>Complex III (D)</p> Signup and view all the answers

Which complex transfers electrons via the Fe-S protein to Cytochrome c1, which reduces cytochrome c, and circulates electrons through cytochrome c1, cytochrome bL and intermediate oxidative states of coenzyme Q?

<p>Complex III (D)</p> Signup and view all the answers

Which complex generates a net result of 4 protons transferred from the matrix to the intermembrane space of the mitochondria?

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

Which complex is composed of a bound FAD and three Fe-S clusters?

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

Which complex has two coenzyme Q binding sites and utilizes reduced coenzyme Q in two ways?

<p>Complex III (C)</p> Signup and view all the answers

Which complex generates two water molecules, the oxidation of four cytochrome c, and the translocation of two protons?

<p>Complex IV (A)</p> Signup and view all the answers

Which complex is an enzyme of the TCA cycle and generates a net result of the production of fumarate from succinate and reduction of one coenzyme Q located outside the complex within the inner mitochondrial membrane?

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

Which complex is composed of FMN, Coenzyme Q and Fe-S clusters and uses NADH as the initial electron donor?

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

Which complex is composed of cytochrome c1, cytochrome bL, cytochrome bH and a Fe-S Rieske protein?

<p>Complex III (C)</p> Signup and view all the answers

Which complex transfers electrons via the Fe-S protein to Cytochrome c1, which reduces cytochrome c, and circulates electrons through cytochrome c1, cytochrome bL and intermediate oxidative states of coenzyme Q?

<p>Complex III (C)</p> Signup and view all the answers

Which complex generates a net result of the production of fumarate from succinate and reduction of one coenzyme Q located outside the complex within the inner mitochondrial membrane?

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

Which complex utilizes reduced coenzyme Q in two ways, resulting in the regeneration of one reduced coenzyme Q, one more reduced cytochrome c, and the translocation of four protons?

<p>Complex III (C)</p> Signup and view all the answers

Which complex generates a net result of 4 protons transferred from the matrix to the intermembrane space of the mitochondria, and the transfer of two electrons and two protons to reduce coenzyme Q located outside the complex within the inner mitochondrial membrane?

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

Which complex is composed of cytochrome a and cytochrome a3 plus two Cu complexes and generates two water molecules, the oxidation of four cytochrome c, and the translocation of two protons?

<p>Complex IV (C)</p> Signup and view all the answers

Which complex is composed of FMN, Coenzyme Q and Fe-S clusters and uses NADH as the initial electron donor?

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

Which complex is an enzyme of the TCA cycle and is composed of a bound FAD and three Fe-S clusters?

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

Which complex has two coenzyme Q binding sites?

<p>Complex III (A)</p> Signup and view all the answers

Which complex is composed of cytochrome c1, cytochrome bL, cytochrome bH and a Fe-S Rieske protein?

<p>Complex III (B)</p> Signup and view all the answers

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