PHOTOSYNTHESIS
LIGHT DEPENDENT REACTIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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concentration gradient in the stromata and root hairs
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Passive transport of H+ from low concentration to high concentration
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peer pressure of the cool electrons in the stroma.
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Active transport from energy transferred by the electrons through the ETC
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Detailed explanation-1: -H+ accumulates in the thylakoid space. The electrons from the reaction center are passed to the first electron transport chain. The electron transport chain pumps H+ ions into the thylakoid space.
Detailed explanation-2: -As electrons pass along the electron transport chain between PS II and PS I, the electrons release energy that is used to pump protons from the stroma into the thylakoid space. This builds up the concentration of H+ within the thylakoid space creating a proton concentration gradient.
Detailed explanation-3: -A photon of light hits chlorophyll, causing an electron to be energized. The free electron travels through the electron transport chain, and the energy of the electron is used to pump hydrogen ions into the thylakoid space, transferring the energy into the electrochemical gradient.
Detailed explanation-4: -From the primary electron acceptor, the electron is transferred from one acceptor to another within PSII. In this electron transfer chain, the energy of the excited electron is utilized to move protons (H+) from the stroma to the lumen of the thylakoids.