BMS1031 Molecular Biology

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1. Which of these is false about DNA and base paring?

  • DNA is planar
  • A bp is made of a purine and a pyrimidine
  • the sugar phosphate backbone is on the outside
  • Hydrogen bonds join base pairs together
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2. UTRs are?

  • Retained in mRNA and translated
  • Form part of the intron and removed during splicing
  • Retained in mRNA but untranslated
  • Lost in mRNA and untranslated

3. Which statement about DNA polymerase is incorrect?

  • Begins at a replication origin
  • Moves in a 3' to 5' direction
  • Adds dNTPs to 3' -OH group
  • Requires a RNA primer

4. Which enzyme cleaves polysaccharide chains in bacterial cell walls in hydrolysis reactions?

  • Hydrolase
  • Lysozyme
  • Nuclease
  • Kinase

5. A nucleoside =

  • Sugar, base, phosphate x 2
  • Sugar and phosphate
  • Sugar and base
  • Sugar, base and phosphate


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