Electron Transfer and Cytochrome Oxidase Quiz

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Questions and Answers

Which molecule is reduced during the process carried out by Cytochrome oxidase?

  • Oxygen (correct)
  • Copper
  • Water
  • Hydrogen

What are the reactive intermediates generated during the transfer of electrons by Cytochrome oxidase?

  • Copper ions
  • Oxygen ions
  • Hydrogen ions (correct)
  • None of the above

How many electrons are transferred at a time during the irreversible reaction carried out by Cytochrome oxidase?

  • 1
  • 4 (correct)
  • 2
  • 3

What is the role of Copper A in Complex 4?

<p>Takes electrons from Cyt c (B)</p> Signup and view all the answers

Which molecule acts as an electron carrier in the process carried out by Complex 4?

<p>Cyt c (C)</p> Signup and view all the answers

What is the final product of the process carried out by Cytochrome oxidase?

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

What is the function of cytochromes in Complex 4?

<p>To transfer electrons to Oxygen (B)</p> Signup and view all the answers

What is the role of Copper in Complex 4?

<p>All of the above (C)</p> Signup and view all the answers

What is the function of Cytochrome a3 in Complex 4?

<p>To donate electrons to Cyt c (A)</p> Signup and view all the answers

What is the overall reaction carried out by Cytochrome oxidase?

<p>O2 + 4H+ + 4e- --&gt; H2O (C)</p> Signup and view all the answers

Which molecule is reduced during the electron transport chain in Complex 4?

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

How many electrons are transferred at a time during the irreversible reaction carried out by cytochrome oxidase?

<p>2 (C)</p> Signup and view all the answers

Which part of Complex 4 takes electrons from Cyt c?

<p>Copper A (D)</p> Signup and view all the answers

What is the end product of the electron transport chain in Complex 4?

<p>H2O (C)</p> Signup and view all the answers

Which molecule is oxidized during the electron transport chain in Complex 4?

<p>Cyt c (B)</p> Signup and view all the answers

How many electrons are taken from Cyt c at a time by the Copper A part of Complex 4?

<p>1 (B)</p> Signup and view all the answers

What is the role of cytochromes in Complex 4?

<p>To carry electrons (A)</p> Signup and view all the answers

What is the name of the irreversible reaction carried out by cytochrome oxidase in Complex 4?

<p>Reduction of Oxygen (D)</p> Signup and view all the answers

What is the function of the Copper B part in Complex 4?

<p>To form H2O (A)</p> Signup and view all the answers

What is the name of the molecule that donates electrons to Complex 4?

<p>Cyt c (C)</p> Signup and view all the answers

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