Why isn't the oxygenase function of rubisco active under normal environmental conditions?
a. the oxygenase activity of the enzyme requires more energy
b. the affinity of the enzyme favors the binding of CO2
c. the oxygenase activity of the enzyme is inhibited by O2
d. the binding site of the enzyme is allosterically inhibited under normal conditions
e. the oxygenase binding site has a higher affinity for ATP
ANSWER: b
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