286800
The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because:
1 high energy bonds are formed in mitochondrial proteins.
2 ADPis pumped out of the matrix into the intermembrane space.
3 a proton gradient forms across the inner membrane.
4 there is a change in the permeability of the inner mitochondrial membrane toward adenosine diphosphate (ADP).
Explanation:
(d) Chemiosmotic theory postulated by the British biochemist, Peter Mitchell $\left( 1920-22 \right)$ to explain the formation of ATP in the mitochondrial electron transport chain. As electrons are transferred along the electron carrier system in the inner mitochondrial membrane, hydrogen ions (protons) are actively transported into the space between the inner and outer mitochondrial membranes, which thus contains a higher concentration of protons than the matrix. This creates an electrochemical gradient across the inner membrane, through which protons move back into the matrix.
NCERT Page-233 & 234 / N-161
RESPIRATION IN PLANTS
286801
What is the function of molecular oxygen in cellular respiration?
1 it causes the breakdown of citric acid.
2 It combines with glucose to produce carbon dioxide.
3 It combines with carbon from organic molecules to produce carbon dioxide.
4 It combines with hydrogen from organic molecules to produce water.
Explanation:
(d) The oxygen obtained from cellular respiration combines with the hydrogen obtained from the oxidation of organic molecules to form water.
286800
The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because:
1 high energy bonds are formed in mitochondrial proteins.
2 ADPis pumped out of the matrix into the intermembrane space.
3 a proton gradient forms across the inner membrane.
4 there is a change in the permeability of the inner mitochondrial membrane toward adenosine diphosphate (ADP).
Explanation:
(d) Chemiosmotic theory postulated by the British biochemist, Peter Mitchell $\left( 1920-22 \right)$ to explain the formation of ATP in the mitochondrial electron transport chain. As electrons are transferred along the electron carrier system in the inner mitochondrial membrane, hydrogen ions (protons) are actively transported into the space between the inner and outer mitochondrial membranes, which thus contains a higher concentration of protons than the matrix. This creates an electrochemical gradient across the inner membrane, through which protons move back into the matrix.
NCERT Page-233 & 234 / N-161
RESPIRATION IN PLANTS
286801
What is the function of molecular oxygen in cellular respiration?
1 it causes the breakdown of citric acid.
2 It combines with glucose to produce carbon dioxide.
3 It combines with carbon from organic molecules to produce carbon dioxide.
4 It combines with hydrogen from organic molecules to produce water.
Explanation:
(d) The oxygen obtained from cellular respiration combines with the hydrogen obtained from the oxidation of organic molecules to form water.
286800
The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because:
1 high energy bonds are formed in mitochondrial proteins.
2 ADPis pumped out of the matrix into the intermembrane space.
3 a proton gradient forms across the inner membrane.
4 there is a change in the permeability of the inner mitochondrial membrane toward adenosine diphosphate (ADP).
Explanation:
(d) Chemiosmotic theory postulated by the British biochemist, Peter Mitchell $\left( 1920-22 \right)$ to explain the formation of ATP in the mitochondrial electron transport chain. As electrons are transferred along the electron carrier system in the inner mitochondrial membrane, hydrogen ions (protons) are actively transported into the space between the inner and outer mitochondrial membranes, which thus contains a higher concentration of protons than the matrix. This creates an electrochemical gradient across the inner membrane, through which protons move back into the matrix.
NCERT Page-233 & 234 / N-161
RESPIRATION IN PLANTS
286801
What is the function of molecular oxygen in cellular respiration?
1 it causes the breakdown of citric acid.
2 It combines with glucose to produce carbon dioxide.
3 It combines with carbon from organic molecules to produce carbon dioxide.
4 It combines with hydrogen from organic molecules to produce water.
Explanation:
(d) The oxygen obtained from cellular respiration combines with the hydrogen obtained from the oxidation of organic molecules to form water.
286800
The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because:
1 high energy bonds are formed in mitochondrial proteins.
2 ADPis pumped out of the matrix into the intermembrane space.
3 a proton gradient forms across the inner membrane.
4 there is a change in the permeability of the inner mitochondrial membrane toward adenosine diphosphate (ADP).
Explanation:
(d) Chemiosmotic theory postulated by the British biochemist, Peter Mitchell $\left( 1920-22 \right)$ to explain the formation of ATP in the mitochondrial electron transport chain. As electrons are transferred along the electron carrier system in the inner mitochondrial membrane, hydrogen ions (protons) are actively transported into the space between the inner and outer mitochondrial membranes, which thus contains a higher concentration of protons than the matrix. This creates an electrochemical gradient across the inner membrane, through which protons move back into the matrix.
NCERT Page-233 & 234 / N-161
RESPIRATION IN PLANTS
286801
What is the function of molecular oxygen in cellular respiration?
1 it causes the breakdown of citric acid.
2 It combines with glucose to produce carbon dioxide.
3 It combines with carbon from organic molecules to produce carbon dioxide.
4 It combines with hydrogen from organic molecules to produce water.
Explanation:
(d) The oxygen obtained from cellular respiration combines with the hydrogen obtained from the oxidation of organic molecules to form water.
