Question 1

Choose the correct answer from the list below. Not all of the answers will be used.
-The thermodynamic driving force of ATP synthesis caused by the pumping of protons is _______________.

Accepted Answer

F

Question 2

Choose the correct answer from the list below. Not all of the answers will be used.
-Atractyloside inhibits the mitochondrial protein _______________.

Accepted Answer

Atractyloside inhibits the mitochondrial protein ATP-ADP translocase, which is involved in the exchange of ATP and ADP across the inner mitochondrial membrane.

Question 3

Choose the correct answer from the list below. Not all of the answers will be used.
-Dihydroxyacetone phosphate is part of the _______________ shuttle.

Accepted Answer

Dihydroxyacetone phosphate is part of the glycerol 3-phosphate shuttle, which is involved in transferring reducing equivalents from the cytosol into the mitochondria in eukaryotic cells.

Question 4

In the glycerol phosphate shuttle, cytoplasmic glycerol phosphate dehydrogenase uses cytoplasmic NADH to reduce __________________ to glycerol 3-phosphate.

Accepted Answer

The answer of In the glycerol phosphate shuttle, cytoplasmic glycerol...

Question 5

The antibiotic __________________ inhibits the flow of protons through ATP synthase.

Accepted Answer

The answer of The antibiotic __________________ inhibits the flow of...

Question 6

Choose the correct answer from the list below. Not all of the answers will be used.
-_______________ is a process by which cytoplasmic NADH can be reoxidized by O2 by using the electron-transport system.

Accepted Answer

The malate-aspartate shuttle is a process that allows cytoplasmic NADH to be reoxidized by transferring electrons into the mitochondria, where they can enter the electron-transport chain and ultimately reduce O2.

Question 7

Choose the correct answer from the list below. Not all of the answers will be used.
-ADP transport into the mitochondria is coupled to the export of _______________.

Accepted Answer

ADP transport into the mitochondria is coupled to the export of ATP through the ATP-ADP translocase, which exchanges ADP and ATP across the mitochondrial membrane.

Question 8

Choose the correct answer from the list below. Not all of the answers will be used.
-_______________ is the mechanism for the proton-driven ATP synthesis.

Accepted Answer

The answer of Choose the correct answer from the list...

Question 9

Choose the correct answer from the list below. Not all of the answers will be used.
-Which form of the ATPase subunits is responsible for phosphorylation of ADP?

Accepted Answer

The "tight" form of the ATPase subunits is responsible for the phosphorylation of ADP to ATP.

Question 10

Choose the correct answer from the list below. Not all of the answers will be used.
-_______________ first described the chemiosmotic hypothesis.

Accepted Answer

Peter Mitchell first described the chemiosmotic hypothesis in 1961, which is a fundamental concept in the field of bioenergetics describing the formation of ATP in mitochondria.

Question 11

Choose the correct answer from the list below. Not all of the answers will be used.
-_______________ is the name given to the hypothesis proposed by Peter Mitchell to explain how ATP synthesis is coupled to electron transport.

Accepted Answer

The chemiosmotic theory, proposed by Peter Mitchell, explains how ATP synthesis is coupled to electron transport by creating a proton gradient across the inner mitochondrial membrane, which then drives ATP synthesis.

Question 12

Acceptor control of oxidative phosphorylation means that the rate of respiration depends upon the level of __________________.

Accepted Answer

The answer of Acceptor control of oxidative phosphorylation means that...

Question 13

ATP is transported out of the mitochondria by the antiporter __________________.

Accepted Answer

The answer of ATP is transported out of the mitochondria...

Question 14

The protein that generates heat by permitting the influx of protons into the mitochondria without the synthesis of ATP is the __________________.

Accepted Answer

The answer of The protein that generates heat by permitting...

Question 15

__________________ is a molecular assembly in the inner mitochondrial membrane that carries out the synthesis of ATP.

Accepted Answer

The answer of __________________ is a molecular assembly in the...

Question 16

__________________ is a poison because it blocks the flow of electrons from cytochrome c to oxygen.

Accepted Answer

The answer of __________________ is a poison because it blocks...

Question 17

In the presence of __________________, respiration continues but no ATP is formed.

Accepted Answer

The answer of In the presence of __________________, respiration continues...

Question 18

Choose the correct answer from the list below. Not all of the answers will be used.
-The rotation of the _______________, driven by proton gradient, powers ATP synthesis.

Accepted Answer

The rotation of the c ring, which is part of ATP synthase, is driven by a proton gradient across the membrane and powers ATP synthesis. This process is a fundamental aspect of chemiosmotic theory, explaining how cells generate energy in the form of ATP.

Question 19

__________________: The number of ATP molecules produced by the transfer of electrons from NADH.

Accepted Answer

The answer of __________________: The number of ATP molecules produced...

Question 20

The membrane protein __________________ couples the entry of ADP into the mitochondrial matrix with the exit of ATP.

Accepted Answer

The answer of The membrane protein __________________ couples the entry...

Quiz 21: The Proton-Motive Force

Choose the correct answer from the list below. Not all of the answers will be used. -The thermodynamic driving force of ATP synthesis caused by the pumping of protons is _______________.

Choose the correct answer from the list below. Not all of the answers will be used. -Atractyloside inhibits the mitochondrial protein _______________.

Choose the correct answer from the list below. Not all of the answers will be used. -Dihydroxyacetone phosphate is part of the _______________ shuttle.

In the glycerol phosphate shuttle, cytoplasmic glycerol phosphate dehydrogenase uses cytoplasmic NADH to reduce __________________ to glycerol 3-phosphate.

The antibiotic __________________ inhibits the flow of protons through ATP synthase.

Choose the correct answer from the list below. Not all of the answers will be used. -_______________ is a process by which cytoplasmic NADH can be reoxidized by O2 by using the electron-transport system.

Choose the correct answer from the list below. Not all of the answers will be used. -ADP transport into the mitochondria is coupled to the export of _______________.

Choose the correct answer from the list below. Not all of the answers will be used. -_______________ is the mechanism for the proton-driven ATP synthesis.

Choose the correct answer from the list below. Not all of the answers will be used. -Which form of the ATPase subunits is responsible for phosphorylation of ADP?

Choose the correct answer from the list below. Not all of the answers will be used. -_______________ first described the chemiosmotic hypothesis.

Choose the correct answer from the list below. Not all of the answers will be used. -_______________ is the name given to the hypothesis proposed by Peter Mitchell to explain how ATP synthesis is coupled to electron transport.