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14 Cards in this Set
- Front
- Back
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mRNA
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template for protein synthesis - translation
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tRNA
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carries activated amino acids to ribosome for peptide bond formation.
Sequence of bonds dictated by mRNA |
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rRNA
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ribosomal - major component of ribosomes; plays catalytic and strucutral role in protein synthesis
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transcription
catalyzed by? |
synthesis of RNA from DNA template.
Catalyzed by RNA polymerase |
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Requirements of transcription:
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-template
-activated precursors - ATP,UTP,GTP,CTP -Divalent metal ion Mg2+ or Mn2+ |
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direction of synthesis in transcription
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5'->3'
same as replication |
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which end of the growing strand are NTPs added in transcription?
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the 3' hydroxyl end
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are primers required for transcription?
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no
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how are nucleotides selected for the sequence in RNA transcription?
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by basepairing with the template.
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what is RNA complementary to
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template DNA
not the coding strand. |
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polarity of DNA coding strand:
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5-3
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polarity of template strand
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3-5 prime
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polarity of RNA strand
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5-3
same as coding strand, both complementary to template |
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promoter sites
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specifically bind RNA polymerase and initiate transcription
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