TREE PHYSIOLOGY
PHOTOSYNTHESIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The chloroplasts would release excess O2.
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The chloroplasts would be unable to generate ATP.
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The chloroplasts would make more glucose molecules.
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The chloroplasts would make more NADPH than usual.
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Detailed explanation-1: -Therefore, if the proton concentration is the same across the thylakoid membrane, there will be no proton gradient. This will cause the ATP synthesis to stop, which, in turn, will stop the synthesis of carbohydrates. In short, abolishing the proton difference across the thylakoid membrane will stop photosynthesis.
Detailed explanation-2: -The buildup of hydrogen ions in the thylakoid space forms an electrochemical gradient because of the difference in the concentration of protons (H+) and the difference in the charge across the membrane that they create.
Detailed explanation-3: -If the thylakoid membrane becomes damaged, causing the inside of the thylakoid to mix with the stroma, there will be no electrochemical proton gradient development. This will affect the production of ATP.
Detailed explanation-4: -The ions flow through ATP synthase from the thylakoid space into the stroma in a process called chemiosmosis to form molecules of ATP, which are used for the formation of sugar molecules in the second stage of photosynthesis.
Detailed explanation-5: -Recall that the concentration of H+ ions is higher inside the thylakoid than it is outside. This difference in H+ ion concentration is called a CHEMIOSMOTIC GRADIENT, which stores potential energy. Therefore, the ions flow through the channel by diffusion.