The following data, presented by G. Bowes and W. L. Ogre in J. Biol. Chem. (1972) 247:2171-2176, describe the relative rates of incorporation of CO, by Rubisco under N, and under pure Oz. Decide whether Oz is a competitive or uncompetitive inhibitor. [CO] (mM) Under N2 Under O2 0.20 16.7 10 0.10 12.5 5.6 0.067 8.3 4.2 0.050 7.1 3.2

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