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Learning objective

Explain the role of DNA polymerase in joining adjacent nucleotides.

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Topic

Biological molecules official content

Subtopic

DNA replication

Aqa A Level BiologyBiological molecules

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Quick explanation

Explain the role of DNA polymerase in joining adjacent nucleotides

  • This point belongs to Biological molecules official content, especially DNA replication.
  • You need to be able to explain the role of DNA polymerase in joining adjacent nucleotides.
  • The key ideas to know are DNA polymerase.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DNA polymerase

Why it matters

This objective helps connect DNA replication to exam-style questions, flashcards, and revision notes for Biological molecules official content.

Quick student answer

What is the primary function of DNA polymerase during DNA replication?

Direct answer

DNA polymerase is responsible for joining adjacent nucleotides to form a new strand of DNA during replication.

Key terms

  • DNA polymerase: An enzyme that synthesizes new DNA strands by adding nucleotides to a pre-existing strand during DNA replication.
  • Phosphodiester bond: A covalent bond that links the 5' phosphate group of one nucleotide to the 3' hydroxyl group of another nucleotide, forming the backbone of DNA.

Common trap

Confusing DNA polymerase with RNA polymerase: Remember that DNA polymerase is involved in DNA replication, while RNA polymerase is responsible for synthesizing RNA from a DNA template.

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