Botany (M.Phil./Ph.D.) 2022 Panjab University Entrance Exam With Answers

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In terpenes biosynthesis pathway, 3 acetyl-CoA are joined together stepwise to form mevalonic acid. Which one of the following three steps is required by mevalonic acid to form isopentenyldiphosphate or isopentenyl pyrophosphate (IPP)?

A: Pyrophosphorylation, Decarboxylation and Dehydration
B: Alkylation, Pyrophosphorylation and Decarboxylation
C: Methylation, Dehydration and Alkylation
D: Phosphorylation, Carboxylation and Methylation

The answer is: A