Rubisco

... about it as being flipped (inside-out) in comparison to mitochondria or as analogy with cristae being stroma. One more thing that came to my mind. RuBISCO is activated by increase of Mg2+ concentration. I'm not sure how this proceeds, as it was always covered in lectures simply as increase of Mg2+ ...

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... the photosynthetic rate decreases until it completely ceases through a process called photorespiration. This is due, in part, to the fact that RuBisCo (the enzyme responsible for the first step in carbon fixation) also fixes oxygen. The opening and closing of the stomata to regulate carbon ...

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... the same stuff as the rest of cell - for catalysis of biochemical reactions. I doubt that majority of proteins is in mitochondria, it's not like RuBISCO in plant cells. Concentration gradient is gradient of concentration. If you do not understand to any of these words, look them up. The ATPase ...

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No, the level of rubisco carboxylase. In the first example, rubisco carboxylase is normal level and the oxygen evolution is consistently higher than CO2 uptake. In the second example, rubisco carboxylase is at 40% its normal level. ...

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... are three graphs. In all the graphs the oxygen levels, illumination and temperature are constant. The only variation is the level of the enzyme rubisco carboxylase which is set at normal for the first graph, 40% of normal in the second and 10% of normal in the third. The x-axis represents the ...

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