The proton-translocating ATP synthase complex is located in the inner membrane of mitochondria. Electron carriers in the electron transport chain include Fe-S clusters, coenzyme Q, and cytochrome C. When the body is deprived of glucose, it breaks down fats and acetyl-CoA builds up, which is then converted into citric acid.

1. 1. the proton-translocating ATP synthase complex is located in the
A) cytosol
B) outer membrane of the mitochondria
C) inner membrane of the mitochondria
D) matrix
E) intermembrane space
2. which of the following are electron carrier in the electron transport chain
A) Fe-S clusters
B) coenzyme Q
C) Cytochrome C
D) iron (II) ions
E) all of these
3. when a body is deprived of glucose it will begin to break down fats in order to conserve
protein. as a consequence acetyl-coa will begin to build up. what compound is this excess by-
product converted into?
A) citric acid
B) pyruvate
C) acetone
D) lactate
E) galactose

2. Solution
1.C) inner membrane of mitochondria
The proton-translocating ATP synthase complex is located in the inner membrane of
mitochondria .
In mitochondria ATP synthase is present in the inner membrane, In a way a mitochondrion is a
bacterium “swallowed― by the eukaryotic cell: then the inner mitochondrial membrane
corresponds to the bacterial cell membrane.
2. E. All of these
Iron–sulfur clusters known for their role in the oxidation-reduction reactions of mitochondrial
electron transport. Complex I and Complex II of oxidative phosphorylation have multiple
Fe–S clusters.
Coenzyme Q participates in aerobic cellular respiration, which generates energy in the form of
ATP.
Cytochrome C is the last enzyme in the respiratory electron transport chain of mitochondria
located in the mitochondrial membrane. It gets electron from each of four cytochrome c
molecules, and transfers these electrons to oxygen molecule, converting oxygen to two
molecules of water.
3. A) Citric acid
Acetyl-CoA reacts with oxaloacetate to form citrate, which is then oxidized to CO 2 in the cycle.