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6. What is the first stage of transcription

  • Hydrogen bonds between DNA break
  • RNA polymerase lines up free RNA
  • RNA polymerase attaches to DNA
  • mRNA is copied

7. What is the use of mRNA

  • To carry genetic code from DNA to cytoplasm
  • Carries amino acids to ribosome
  • To catalyse polypeptide chain
  • To move DNA along and form mRNA strand

8. What is the last step of transcription?

  • mRNA moves out through a nuclear pore to attach to a ribosome
  • RNA reaches stop codon and detaches from DNA
  • Hydrogen bonds reform
  • tRNA molecules carry amino acids to the ribosome

9. Where does translation occur?

  • Ribosomes in cytoplasm
  • Mitochondria
  • Nucleolus
  • Vacuole