Electron Transport Chain Quiz

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Which molecule accepts electrons from both Complex I and Complex II in the electron transport chain?

cytochrome c

succinate

FAD

CoQ (correct)

Which complex in the electron transport chain is a dimer of two identical complexes, each made of 11 or more different subunits?

Complex V

Complex II

Complex IV

Complex III (correct)

Which molecule transfers electrons one at a time to the Fe-S centers in Complex II of the electron transport chain?

NADH

FADH2 (correct)

succinate

cytochrome c1

Which subunit within Complex III of the electron transport chain reduces cytochrome c?

cytochrome c1 Signup and view all the answers

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

CoQH2 Signup and view all the answers

Which molecule takes 2 electrons from succinate in the TCA cycle in Complex II of the electron transport chain?

FAD Signup and view all the answers

Which complex in the electron transport chain contains cytochrome b with two hemes and the Rieske iron sulfur center as its functional core?

Complex III Signup and view all the answers

Which molecule is the mobile carrier that receives electrons from the Fe-S centers in Complex II and cytochrome b in Complex III of the electron transport chain?

CoQ Signup and view all the answers

Which complex in the electron transport chain accepts electrons from CoQH2 that is reduced by accepting electrons from Complexes I and II?

Complex III Signup and view all the answers

Which molecule delivers electrons to Complex IV in the electron transport chain?

cytochrome c Signup and view all the answers

Which subunit within Complex III of the electron transport chain contains a prosthetic group that accepts electrons from CoQH2?

Rieske iron sulfur center Signup and view all the answers

Which molecule delivers 2 electrons to Complex II in the electron transport chain?

succinate Signup and view all the answers

Which molecule accepts electrons from both Complex I and Complex II in the electron transport chain?

CoQ Signup and view all the answers

Which complex in the electron transport chain is a dimer of two identical complexes, each made of 11 or more different subunits?

Complex III Signup and view all the answers

Which molecule transfers electrons one at a time to the Fe-S centers in Complex II of the electron transport chain?

FADH2 Signup and view all the answers

Which subunit within Complex III of the electron transport chain reduces cytochrome c?

cytochrome c1 Signup and view all the answers

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

CoQH2 Signup and view all the answers

Which molecule takes 2 electrons from succinate in the TCA cycle in Complex II of the electron transport chain?

FAD Signup and view all the answers

Which complex in the electron transport chain contains cytochrome b with two hemes and the Rieske iron sulfur center as its functional core?

Complex III Signup and view all the answers

Which molecule is the mobile carrier that receives electrons from the Fe-S centers in Complex II and cytochrome b in Complex III of the electron transport chain?

CoQ Signup and view all the answers

Which complex in the electron transport chain accepts electrons from CoQH2 that is reduced by accepting electrons from Complexes I and II?

Complex III Signup and view all the answers

Which molecule delivers electrons to Complex IV in the electron transport chain?

cytochrome c Signup and view all the answers

Which subunit within Complex III of the electron transport chain contains a prosthetic group that accepts electrons from CoQH2?

Rieske iron sulfur center Signup and view all the answers

Which molecule delivers 2 electrons to Complex II in the electron transport chain?

succinate Signup and view all the answers

What is the function of FADH2 in Complex 2?

Takes electrons from succinate Signup and view all the answers

What is the role of Fe-S centers in Complex 2?

Delivers electrons to CoQ Signup and view all the answers

Which subunit forms the functional core of Complex III?

Cytochrome c1 Signup and view all the answers

What is the prosthetic group within Complex III that reduces cytochrome c?

Cytochrome c1 Signup and view all the answers

What is the electron donor to Complex IV?

Cytochrome c1 Signup and view all the answers

How many subunits make up each identical complex in Complex III?

more than 11 Signup and view all the answers

What is the mobile carrier in Complex III?

Coenzyme Q Signup and view all the answers

What delivers the electrons one at a time to the wire in Complex 2?

FADH2 Signup and view all the answers

What is the name of the enzyme in Complex III?

Cytochrome c Reductase Signup and view all the answers

What is reduced by accepting electrons from Complexes I & II in Complex III?

CoQ Signup and view all the answers

What is the name of the electron donor to Complex III?

Coenzyme QH2 Signup and view all the answers

What is the name of the electron acceptor in Complex IV?

Oxygen Signup and view all the answers

Electron Transport Chain Quiz

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Questions and Answers

Which molecule accepts electrons from both Complex I and Complex II in the electron transport chain?

Which complex in the electron transport chain is a dimer of two identical complexes, each made of 11 or more different subunits?

Which molecule transfers electrons one at a time to the Fe-S centers in Complex II of the electron transport chain?

Which subunit within Complex III of the electron transport chain reduces cytochrome c?

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

Which molecule takes 2 electrons from succinate in the TCA cycle in Complex II of the electron transport chain?

Which complex in the electron transport chain contains cytochrome b with two hemes and the Rieske iron sulfur center as its functional core?

Which molecule is the mobile carrier that receives electrons from the Fe-S centers in Complex II and cytochrome b in Complex III of the electron transport chain?

Which complex in the electron transport chain accepts electrons from CoQH2 that is reduced by accepting electrons from Complexes I and II?

Which molecule delivers electrons to Complex IV in the electron transport chain?

Which subunit within Complex III of the electron transport chain contains a prosthetic group that accepts electrons from CoQH2?

Which molecule delivers 2 electrons to Complex II in the electron transport chain?

Which molecule accepts electrons from both Complex I and Complex II in the electron transport chain?

Which complex in the electron transport chain is a dimer of two identical complexes, each made of 11 or more different subunits?

Which molecule transfers electrons one at a time to the Fe-S centers in Complex II of the electron transport chain?

Which subunit within Complex III of the electron transport chain reduces cytochrome c?

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

Which molecule takes 2 electrons from succinate in the TCA cycle in Complex II of the electron transport chain?

Which complex in the electron transport chain contains cytochrome b with two hemes and the Rieske iron sulfur center as its functional core?

Which molecule is the mobile carrier that receives electrons from the Fe-S centers in Complex II and cytochrome b in Complex III of the electron transport chain?

Which complex in the electron transport chain accepts electrons from CoQH2 that is reduced by accepting electrons from Complexes I and II?

Which molecule delivers electrons to Complex IV in the electron transport chain?

Which subunit within Complex III of the electron transport chain contains a prosthetic group that accepts electrons from CoQH2?

Which molecule delivers 2 electrons to Complex II in the electron transport chain?

What is the function of FADH2 in Complex 2?

What is the role of Fe-S centers in Complex 2?

Which subunit forms the functional core of Complex III?

What is the prosthetic group within Complex III that reduces cytochrome c?

What is the electron donor to Complex IV?

How many subunits make up each identical complex in Complex III?

What is the mobile carrier in Complex III?

What delivers the electrons one at a time to the wire in Complex 2?

What is the name of the enzyme in Complex III?

What is reduced by accepting electrons from Complexes I & II in Complex III?

What is the name of the electron donor to Complex III?

What is the name of the electron acceptor in Complex IV?

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