Oxidative Phosphorylation Test Questions And Answers
Describe the region in Model 1 where the highest oxidation, because there is a decrease in charge
concentration of hydrogen ion (H+) is located. -
-The region in Model 1 where the
hydrogen ion concentration is located is the What molecule is the final electron acceptor after
intermembrane space which is in between the the electron has moved through the electron
outer mitochondrial membrane and the inner transport chain? - -Oxygen acts as the final
mitochondrial membrane. electron acceptor and accepts the electron after it
has moved through the electron transport chain
According to Model 1, how do the hydrogen ions
reach this area (inter membrane space)? - What compound is formed as a final product of
-According to Model 1, hydrogen ions the electron transport chain? - -2 water
reach this area through embedded protein molecules are formed as the final product of the
channels (powered by electron transport chains) electron transport chain.
that are located in the inner mitochondrial
membrane from the mitochondrial matrix.
Is any ATP produced in the electron transport
chain? - -No, no ATP is produced in the
Explain why energy is required to move the electron transport chain
hydrogen ions across the membrane in the
direction indicated in Model 1. - -Energy is
required to move the hydrogen ions across the Is any ATP used in the electron transport chain? -
membrane in the direction indicated in Model 1 -No, no ATP is used in the electron
because the hydrogen ions are moving against transport chain
the concentration gradient by active transport
which needs energy to work.
Describe the movement of hydrogen ions through
the membrane illustrated in Model 2. - -
Where do the electron acceptor molecules (for Hydrogen ions diffuse from the intermembrane
oxidative phosphorylation) come from? - - space (in between outer and inner mitochondrial
The electron acceptor molecules come from membranes), where there is a relatively higher
glycolysis, the link reaction, and krebs cycle. concentration of H+ ions, through the ATP
synthase protein, to the mitochondrial matrix,
where there is a relatively lower concentration of
When the electrons are released from the H+ ions.
electron acceptor molecules (in oxidative
phosphorylation), what else is produced? -
-When the electrons are released from the Would free energy be required for the hydrogen
electron acceptor molecules H+ ions are also ions to move in the direction shown in Model 2?
produced. Explain your reasoning. - -Free energy
would not be required for the hydrogen ions to
move in the direction shown in Model 2 because
Is the release of an electron from one of these the hydrogen ions are moving through the
electron acceptor molecules oxidation or process of facilitated diffusion (not moving
reduction? - -The release of an electron against concentration gradient) because the ions
from one of these electron acceptor molecules is are moving down the concentration gradient
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Describe the region in Model 1 where the highest oxidation, because there is a decrease in charge
concentration of hydrogen ion (H+) is located. -
-The region in Model 1 where the
hydrogen ion concentration is located is the What molecule is the final electron acceptor after
intermembrane space which is in between the the electron has moved through the electron
outer mitochondrial membrane and the inner transport chain? - -Oxygen acts as the final
mitochondrial membrane. electron acceptor and accepts the electron after it
has moved through the electron transport chain
According to Model 1, how do the hydrogen ions
reach this area (inter membrane space)? - What compound is formed as a final product of
-According to Model 1, hydrogen ions the electron transport chain? - -2 water
reach this area through embedded protein molecules are formed as the final product of the
channels (powered by electron transport chains) electron transport chain.
that are located in the inner mitochondrial
membrane from the mitochondrial matrix.
Is any ATP produced in the electron transport
chain? - -No, no ATP is produced in the
Explain why energy is required to move the electron transport chain
hydrogen ions across the membrane in the
direction indicated in Model 1. - -Energy is
required to move the hydrogen ions across the Is any ATP used in the electron transport chain? -
membrane in the direction indicated in Model 1 -No, no ATP is used in the electron
because the hydrogen ions are moving against transport chain
the concentration gradient by active transport
which needs energy to work.
Describe the movement of hydrogen ions through
the membrane illustrated in Model 2. - -
Where do the electron acceptor molecules (for Hydrogen ions diffuse from the intermembrane
oxidative phosphorylation) come from? - - space (in between outer and inner mitochondrial
The electron acceptor molecules come from membranes), where there is a relatively higher
glycolysis, the link reaction, and krebs cycle. concentration of H+ ions, through the ATP
synthase protein, to the mitochondrial matrix,
where there is a relatively lower concentration of
When the electrons are released from the H+ ions.
electron acceptor molecules (in oxidative
phosphorylation), what else is produced? -
-When the electrons are released from the Would free energy be required for the hydrogen
electron acceptor molecules H+ ions are also ions to move in the direction shown in Model 2?
produced. Explain your reasoning. - -Free energy
would not be required for the hydrogen ions to
move in the direction shown in Model 2 because
Is the release of an electron from one of these the hydrogen ions are moving through the
electron acceptor molecules oxidation or process of facilitated diffusion (not moving
reduction? - -The release of an electron against concentration gradient) because the ions
from one of these electron acceptor molecules is are moving down the concentration gradient
1/3
