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The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because: [2008]
  • a)
    high energy bonds are formed in mitochondrial proteins
  • b)
    ADP is pumped out of the matrix into the intermembrane space 
  • c)
    a proton gradient forms across the inner membrane
  • d)
    there is a change in the permeability of the inner mitochondrial membrane toward adenosine diphosphate (ADP)
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
The chemiosmotic coupling hypothesis of oxidative phosphorylation prop...
The production of ATP with the help of energy liberated during oxidation of reduced coenzymes and terminal oxidation is called oxidative phosphorylation. Peter Mitchell (1961) gave a hypothesis known as chemiosmotic hypothesis for ATP synthesis. According to This when electrons flow from dual proton, electron carrier to a non-hydrogen carrier the H+ are released and expelled into the intermembrane spare and. thus creates a proton gradient with higher concentration of H+ in the inter membranous space than the matrix.

Due to the Proton motive force the protons flow back and energy liberated during this back flow protons activate ATPase present in F1 head to synthesize ATP.
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The chemiosmotic coupling hypothesis of oxidative phosphorylation prop...
Chemiosmotic theory 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
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Read the passage given below and answer the following questions:Adenosine triphosphate (ATP) is the energy carrying molecule found in the cells of all living things. ATP captures chemical energy obtained from the breakdown of food molecules and releases it to fuel other cellular processes. ATP is a nucleotide that consists of three main structures: the nitrogenous base, adenine; the sugar, ribose; and a chain of three phosphate groups bound to ribose. The phosphate tail of ATP is the actual power source which the cell taps. Available energy is contained in the bonds between the phosphates and is released when they are broken, which occurs through the addition of a water molecule (a process called hydrolysis). Usually only the outer phosphate is removed from ATP to yield energy; when this occurs ATP is converted to adenosine diphosphate (ADP), the form of the nucleotide having only two phosphates.The importance of ATP (adenosine triphosphat e) as the main source of chemical energy in living matter and its involvement in cellular processes has long been recognized. The primary mechanism whereby higher organisms, including humans, generate ATP is through mitochondrial oxidative phosphorylation. For the majority of organs, the main metabolic fuel is glucose, which in the presence of oxygen undergoes complete combustion to CO2 and H2O: C6H12O6 + 6O2 → 6O2 + 6H2O + energyThe free energy (ΔG) liberated in this exergonic (ΔG is negative) reaction is partially trapped as ATP in two consecutive processes: glycolysis (cytosol) and oxidative phosphorylation (mitochondri

Read the passage given below and answer the following questions:Adenosine triphosphate (ATP) is the energy carrying molecule found in the cells of all living things. ATP captures chemical energy obtained from the breakdown of food molecules and releases it to fuel other cellular processes. ATP is a nucleotide that consists of three main structures: the nitrogenous base, adenine; the sugar, ribose; and a chain of three phosphate groups bound to ribose. The phosphate tail of ATP is the actual power source which the cell taps. Available energy is contained in the bonds between the phosphates and is released when they are broken, which occurs through the addition of a water molecule (a process called hydrolysis). Usually only the outer phosphate is removed from ATP to yield energy; when this occurs ATP is converted to adenosine diphosphate (ADP), the form of the nucleotide having only two phosphates.The importance of ATP (adenosine triphosphat e) as the main source of chemical energy in living matter and its involvement in cellular processes has long been recognized. The primary mechanism whereby higher organisms, including humans, generate ATP is through mitochondrial oxidative phosphorylation. For the majority of organs, the main metabolic fuel is glucose, which in the presence of oxygen undergoes complete combustion to CO2 and H2O: C6H12O6 + 6O2 → 6O2 + 6H2O + energyThe free energy (ΔG) liberated in this exergonic (ΔG is negative) reaction is partially trapped as ATP in two consecutive processes: glycolysis (cytosol) and oxidative phosphorylation (mitochondri

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The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because: [2008]a)high energy bonds are formed in mitochondrial proteinsb)ADP is pumped out of the matrix into the intermembrane spacec)a proton gradient forms across the inner membraned)there is a change in the permeability of the inner mitochondrial membrane toward adenosine diphosphate (ADP)Correct answer is option 'C'. Can you explain this answer?
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The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because: [2008]a)high energy bonds are formed in mitochondrial proteinsb)ADP is pumped out of the matrix into the intermembrane spacec)a proton gradient forms across the inner membraned)there is a change in the permeability of the inner mitochondrial membrane toward adenosine diphosphate (ADP)Correct answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because: [2008]a)high energy bonds are formed in mitochondrial proteinsb)ADP is pumped out of the matrix into the intermembrane spacec)a proton gradient forms across the inner membraned)there is a change in the permeability of the inner mitochondrial membrane toward adenosine diphosphate (ADP)Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because: [2008]a)high energy bonds are formed in mitochondrial proteinsb)ADP is pumped out of the matrix into the intermembrane spacec)a proton gradient forms across the inner membraned)there is a change in the permeability of the inner mitochondrial membrane toward adenosine diphosphate (ADP)Correct answer is option 'C'. Can you explain this answer?.
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