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Jigneshbharati Posted 7 years ago
Grammar

A precursor

Mevalonic acid is a key organic compound in biochemistry. It is a precursor in the biosynthetic pathway, known as the HMG-CoA reductase pathway, that produces terpenes and steroids.
I read the above while I was searching about the statins.
Please explain the use of "a" in "a precursor...". I have checked the definition but finding it hard to see the countability. Can we have more than one of the noun "precursor"?
  

Top answer

It takes many compounds to produce terpenes and steroids. Each of those compounds is one of many precursors needed in order to produce terpenes and steroids. One of these many precusor compounds is mevalonic acid.

  • It takes many compounds to produce terpenes and steroids.
  • Each of those compounds is one of many precursors needed in order to produce terpenes and steroids.
  • One of these many precusor compounds is mevalonic acid.
  • A precursor (in biochemistry) is one of the compounds (molecules) that must be present first in order to begin the production of some other bigger compound (molecule).
  • CJ
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1 Answers
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It takes many compounds to produce terpenes and steroids. Each of those compounds is one of many precursors needed in order to produce terpenes and steroids. One of these many precusor compounds is mevalonic acid.

A precursor (in biochemistry) is one of the compounds (molecules) that must be present first in order to begin the production of some other bigger compound (molecule).

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