14 Questions
Where does the electron transport chain take place?
Inner mitochondrial membrane
What is the function of the electron transport chain?
Regenerate the oxidized forms of the coenzymes to continue the oxidation reaction
Which complex pumps 4 protons outside the inner mitochondrial membrane?
Complex I
What happens when electrons arrive at Complex IV in the electron transport chain?
2 protons are pumped outside
What is the function of the electron transport chain?
To regenerate the oxidized forms of the coenzymes to continue the oxidation reaction (catabolism)
Where does the electron transport chain take place?
Inner mitochondrial membrane
Which molecule carries 2 electrons to Complex I in the electron transport chain?
NADH
How many protons are pumped outside the membrane when NADH releases 2 electrons to Complex I?
4
Which molecule carries 2 electrons to Complex II in the electron transport chain?
FADH2
How many protons are pumped outside the membrane when FADH2 releases 2 electrons to Complex II?
0
Which molecule transports the four electrons from Complex II to Complex III?
Coenzyme Q
How many protons are pumped outside the membrane when the electrons arrive at Complex III?
4
Which molecule transports electrons from Complex III to Complex IV?
Cytochrome C
How many protons are pumped outside the membrane when the electrons arrive at Complex IV?
2
Study Notes
Electron Transport Chain
- The electron transport chain takes place in the mitochondrial inner membrane.
- The function of the electron transport chain is to generate energy for the cell by pumping protons outside the inner mitochondrial membrane.
Complex I
- NADH carries 2 electrons to Complex I.
- When NADH releases 2 electrons to Complex I, 4 protons are pumped outside the membrane.
Complex II
- FADH2 carries 2 electrons to Complex II.
- When FADH2 releases 2 electrons to Complex II, 2 protons are pumped outside the membrane.
Complex III
- Electrons from Complex II are transported to Complex III by the molecule CoQ (Coenzyme Q).
- When the electrons arrive at Complex III, 4 protons are pumped outside the membrane.
Complex IV
- Electrons from Complex III are transported to Complex IV by the molecule Cytochrome c.
- When electrons arrive at Complex IV, 2 protons are pumped outside the membrane, and water is formed.
Electron Transport Chain Quiz: Test your knowledge of the sequence of electron-carrying proteins in aerobic cells, as well as the functions of this vital process in biochemistry. Challenge yourself with questions on energy release, coenzyme regeneration, and the inner mitochondrial membrane.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
