Answer :
If a plant cell is exposed to a toxin that makes the thylakoid membrane freely permeable to protons, there would be no ATP produced in the chloroplasts to power photosynthesis in the absence of light energy.
What is permeability?
Permeability is the amount of magnetization that a material acquires in electromagnetism in response to an applied magnetic field. The Greek letter is used to denote permeability. William Thomson, 1st Baron Kelvin first used the phrase in 1872, and Oliver Heaviside first used it in conjunction with permittivity in 1885.
Hence, If a plant cell is exposed to a toxin that makes the thylakoid membrane freely permeable to protons, there would be no ATP produced in the chloroplasts to power photosynthesis in the absence of light energy.
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