BMS1031 Molecular Biology

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1. DNA is made of which substrates?

  • Phosphate, pentose sugar and organic bases
  • Phosphate, ribose sugar and purine bases
  • Sulphate, pentose sugar and organic bases
  • Phosphate, hexose sugar and organic bases
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2. pre-mRNA splicing involves?

  • A hydrolysis reaction followed by condensation to join exons
  • A single trans-esterification reaction to join exons
  • 2 sequential phosphoryl-transfer reactions to join exons
  • A hydrolysis reaction to join exons

3. Which RNAs have regulatory roles?

  • miRNA and mRNA
  • tRNA and rRNA
  • miRNA and siRNA
  • snRNA and siRNA

4. Globular domains tend to:

  • Be found in catalytic and signalling proteins
  • Are found in structural proteins
  • Are elongated in structure
  • Are insoluble filaments

5. what are cajal bodies?

  • Membrane bound regions that are involved in RNA processing
  • Non-membrane bound nuclear substructures that act in RNP biogenesis and the modification of snRNA and snoRNA
  • Non-membrane bound nuclear substructures that act as a ribosome factory
  • Membrane bond regions where DNA replication and processing occurs

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