DNA replication, transcription. ribsomes and translation

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Last updated 11:44 PM on 8/23/26
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4 Terms

1
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What is the role of RNA primase?

Synthesises short RNA primers complementary to the DNA template, providing a starting point for DNA polymerase

2
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What is the role of DNA ligase?

Forms the phosphodiester bonds between nucleotides

3
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Summarise transcription

  • RNA polymerase binds to promote - starting point form transcription

  • RNA polymerase moves along DNA template in 5’ to 3’ and causes strand to unwind and unzip, also adds RNA nucleotides

  • Terminal signal reached in DNA and transcription stops


4
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What are polyribosomes/polysomes?

Multiple ribosomes can translate a single mRNA molecule