Terpenes in Pharmacognosy and Medicinal Plants
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Questions and Answers

Which pathway can be used to derive the biochemical isoprene units?

  • Mevalonic acid (MVA) pathway
  • Phosphorylation pathway
  • Decarboxylation–dehydration pathway
  • Deoxyxylulose phosphate (MEP) pathway (correct)

    • What is the precursor of all terpenoids?

  • Dimethylallylpyrophosphate (DMAPP)
  • Mevalonic acid diphosphate
  • Mevalonic acid (correct)
  • Isopentenyl diphosphate

    • Which enzyme is responsible for phosphorylating the primary alcohol group to form mevalonic acid diphosphate?

  • Mevalonate kinase
  • Isopentenyl isomerase
  • Mevalonate 5-diphosphate decarboxylase
  • Phosphomevalonate kinase (correct)

    • Which enzyme is responsible for decarboxylation–dehydration to give IPP?

    <p>Mevalonate 5-diphosphate decarboxylase</p> Signup and view all the answers

    Which enzyme is responsible for isomerizing to form dimethylallylpyrophosphate (DMAPP)?

    <p>Isopentenyl isomerase</p> Signup and view all the answers

    What are the biochemically active isoprene units?

    <p>DMAPP and IPP</p> Signup and view all the answers

    Which compound is transformed into the five-carbon phosphorylated isoprene units?

    <p>MVA</p> Signup and view all the answers

    What is the precursor of all terpenoids?

    <p>Mevalonic acid</p> Signup and view all the answers

    Which enzyme is responsible for phosphorylating the primary alcohol group to form mevalonic acid diphosphate?

    <p>Mevalonate kinase</p> Signup and view all the answers

    What reaction is carried out by mevalonate 5-diphosphate decarboxylase?

    <p>Decarboxylation–dehydration to give IPP</p> Signup and view all the answers

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