Multiple choice

RuBisCo enzyme needs a magnesium ion to be bound to the lysine in order to function. This magnesium ion is released from

  1. cytosol

  2. stroma

  3. thylakoid membrane

  4. thylakoid lumen
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The magnesium ion required for the activation of RuBisCo is released from the thylakoid lumen when the inner pH drops due to the active pumping of protons from the electron flow.

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