The enzyme responsible for oxidative phosphorylation is ATP synthase. ATP synthase is located in the F₁ component of F₀ – F₁ or elementary particles. ATP synthase becomes active in ATP formation only where there is a proton gradient having higher concentration of H⁺ or protons on the F₀ side as compared to F₁ side. Increased proton concentration is produced in the outer chamber of outer surface of inner mitochondrial memberane by the pushing of protons with the help of energy liberated by passage of electrons from one carrier to another.

Correct Option: D

The enzyme responsible for oxidative phosphorylation is ATP synthase. ATP synthase is located in the F₁ component of F₀ – F₁ or elementary particles. ATP synthase becomes active in ATP formation only where there is a proton gradient having higher concentration of H⁺ or protons on the F₀ side as compared to F₁ side. Increased proton concentration is produced in the outer chamber of outer surface of inner mitochondrial memberane by the pushing of protons with the help of energy liberated by passage of electrons from one carrier to another.

Glycolysis, Krebs cycle and electron transport system, they all give ATP which is the main energy currency of our body. Glycosis takes place in cytoplasm, Krebs cycle also occurs in cytoplasm while ETS takes place in the mitochondria.

Correct Option: D

Glycolysis, Krebs cycle and electron transport system, they all give ATP which is the main energy currency of our body. Glycosis takes place in cytoplasm, Krebs cycle also occurs in cytoplasm while ETS takes place in the mitochondria.

Succinate: ubiquinone oxidoreductase, also known in mitochondria as complex II, provides a link between the citric acid cycle and the membrane-bound electron-transport system. The membrane extrinsic, water-soluble domain, known as succinate dehydrogenase (SDH), contains the fumarate/succinate active site with a covalently bound FAD group and three iron-sulfur clusters: [2Fe-2S]² +/1+, [4Fe- 4S]²+/1+, and [3Fe-4S]¹ +/0. The enzyme catalyzes the interconversion of fumarate and succinate, and is closely related to fumarate reductase.

Correct Option: C

Succinate: ubiquinone oxidoreductase, also known in mitochondria as complex II, provides a link between the citric acid cycle and the membrane-bound electron-transport system. The membrane extrinsic, water-soluble domain, known as succinate dehydrogenase (SDH), contains the fumarate/succinate active site with a covalently bound FAD group and three iron-sulfur clusters: [2Fe-2S]² +/1+, [4Fe- 4S]²+/1+, and [3Fe-4S]¹ +/0. The enzyme catalyzes the interconversion of fumarate and succinate, and is closely related to fumarate reductase.

Chemiosmotic theory was postulated by the British biochemist Peter Mitchell (1920- 22) 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.

Correct Option: C

Chemiosmotic theory was postulated by the British biochemist Peter Mitchell (1920- 22) 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.

Specialized epidermal cells surrounding the guard cells are known as Subsidiary or accessory cell.

Correct Option: B

Specialized epidermal cells surrounding the guard cells are known as Subsidiary or accessory cell.