Nucleic acids - Mark Scheme

1. The X-ray diffraction pattern obtained by Rosalind Franklin indicated that the structure of DNA had2. The structure of a ribosome includesI rRNAII ProteinIII EnzymesA I onlyB 1 and II onlyC I and III onlyD I, II and III3. The role of DNA gyrase is to4. Which of the following do not occur after transcription in prokaryotes?I Attachment of mRNA to a ribosome

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