A1.2.5 - RNA as a polymer formed by condensation of nucleotide monomers

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Last updated 4:50 AM on 10/17/26
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4 Terms

1
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Condensation Reaction

  • Chemical reaction used to produce polymers

  • Involves the loss/production of a water molecule


2
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Condensation Reactions Link Nucleotides Into ‍a Polymer

  1. Nucleotide monomers are joined by ‍condensation reactions

  2. Each reaction forms a ‌phosphodiester bond and releases a molecule ‌of water

  3. The polymer grows in ‍the 5' to 3' ‍direction as new nucleotides are ‌added to the 3' end.‌

  4. Forms RNA polymer


<ol><li><p>Nucleotide monomers are joined by ‍<strong>condensation reactions</strong> </p></li><li><p>Each reaction forms a ‌<strong>phosphodiester bond</strong> and releases a molecule ‌of <strong>water</strong></p></li><li><p>The polymer grows in ‍the <strong>5' to 3' ‍direction</strong> as new nucleotides are ‌added to the 3' end.‌</p></li><li><p>Forms RNA polymer</p></li></ol><p></p>
3
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Ligase

  • Enzyme that joins two molecules together by forming a bond between them

  • DNA ligase helps seal the sugar-phosphate backbone by joining DNA fragments


4
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5’ to 3’

  • Direction a nucleic acid strand is built and read

  • 5' end = phosphate end

  • 3' end = hydroxyl end