(a(i))[1]
Fig. 4.1 shows a section of a DNA molecule rather than a section of an RNA molecule. Explain why.
(a(ii))[1]
Name the covalent bond that joins the two nucleotides.
(a(iii))[1]
Name the component labelled X.
(b)[2]
Outline the role of transfer RNA (tRNA) in polypeptide synthesis.
(c)[3]
Describe how a peptide bond is produced between two amino acids during polypeptide synthesis.