Master the Complex III Electron Transport Chain

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which molecule donates two electrons to complex III in the electron transport chain?

  • CoQH2 (correct)
  • Fe-S centers
  • Cyt b
  • Cyt c1

What happens to the electron that is sent through Fe-S centers in complex III?

  • It is lost in the process
  • It is dropped to Cyt c1 (correct)
  • It is sent to Cyt b
  • It is recycled by CoQ

Which molecule receives an electron from Cyt b in complex III?

  • Fe-S centers
  • Cyt c1
  • Cyt c
  • CoQ (correct)

What is the prosthetic group of cytochromes?

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

How many nitrogen atoms are bonded to the iron atom in the porphyrin ring of heme?

<p>4 (D)</p> Signup and view all the answers

What happens to the electron that is sent through Cyt b in complex III?

<p>It is dropped to CoQ (B)</p> Signup and view all the answers

What is the function of Cyt c in the electron transport chain?

<p>To transfer electrons between complexes (C)</p> Signup and view all the answers

How many electrons are taken from CoQH2 in complex III?

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

What is the role of Fe-S centers in complex III?

<p>To transfer electrons (C)</p> Signup and view all the answers

What happens to the electron that is sent through Cyt c1 in complex III?

<p>It is dropped to Cyt c (C)</p> Signup and view all the answers

What happens to CoQ after it gains two electrons in complex III?

<p>It is recycled (A)</p> Signup and view all the answers

What is the function of Cyt b in the electron transport chain?

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

Which molecule donates two electrons to complex III in the electron transport chain?

<p>CoQH2 (B)</p> Signup and view all the answers

What happens to the electron that is sent through Fe-S centers in complex III?

<p>It is dropped to Cyt c1 (A)</p> Signup and view all the answers

Which molecule receives an electron from Cyt b in complex III?

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

What is the prosthetic group of cytochromes?

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

How many nitrogen atoms are bonded to the iron atom in the porphyrin ring of heme?

<p>4 (A)</p> Signup and view all the answers

What happens to the electron that is sent through Cyt b in complex III?

<p>It is dropped to CoQ (B)</p> Signup and view all the answers

What is the function of Cyt c in the electron transport chain?

<p>To transfer electrons between complexes (D)</p> Signup and view all the answers

How many electrons are taken from CoQH2 in complex III?

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

What is the role of Fe-S centers in complex III?

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

What happens to the electron that is sent through Cyt c1 in complex III?

<p>It is dropped to Cyt c (B)</p> Signup and view all the answers

What happens to CoQ after it gains two electrons in complex III?

<p>It is recycled (D)</p> Signup and view all the answers

What is the function of Cyt b in the electron transport chain?

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

Which molecule donates two electrons to complex III in the electron transport chain?

<p>CoQH2 (C)</p> Signup and view all the answers

What happens to the one electron that is sent through Fe-S centers and Cyt c1 in complex III?

<p>It is dropped to the mobile carrier (D)</p> Signup and view all the answers

What happens to the one electron that is sent through Cyt b in complex III?

<p>It is dropped to CoQ (C)</p> Signup and view all the answers

What is the prosthetic group of cytochromes?

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

What is the iron atom in heme bonded to?

<p>4 N atoms of the porphyrin ring (B)</p> Signup and view all the answers

How many electrons are taken from CoQH2 in complex III?

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

What is the function of Cyt c1 in complex III?

<p>To drop an electron to the mobile carrier (D)</p> Signup and view all the answers

What is the function of Cyt b in complex III?

<p>To drop an electron to CoQ (A)</p> Signup and view all the answers

What happens to CoQ after it gains 2 electrons in complex III?

<p>It will be recycled (A)</p> Signup and view all the answers

What is the name of the mobile carrier that receives an electron from Cyt c1 in complex III?

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

What is the name of the mobile carrier that receives an electron from Cyt b in complex III?

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

What is the name of the group of iron-sulfur proteins that are involved in electron transfer in complex III?

<p>Fe-S centers (A)</p> Signup and view all the answers

Flashcards are hidden until you start studying

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser