1)During the oxidation of amino acids, a key set of reactions is the uptake of t

Question

1)During the oxidation of amino acids, a key set of reactions is the uptake of the ammonium ion (NH4) to form carbamoyl phosphate, from ammonia, ATP and HCO3 The activation of the carbonate ion (HCO3) is the first step of this process. A similar activation occurs in what other steps we have seen in metabolism? a) TPP dependent decarboxylation of pyruvate b) The addition of carbonate ion to ribulose bisphosphate by ribulose bisphosphate carboxylase/oxygenase during the Calvin cycle The reverse of the beta decarboxylation in the TCA cycle during the conversion of isocitrate to alpha-keto glutarate c) d) The carboxylation of pyruvate forming oxaloacetate during glyconeogenesis

Explanation / Answer

During the carboxylation of pyruvate, CO2 is activated by ATP. Biotin helps in the formation of oxaloacetate from pyruvate. Biotin group helps in the carboxylation of pyruvate

So, the answer is option D.

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