(a(i))[2]
Name the molecules A and B.
(a(ii))[3]
Explain how the properties of the A molecules make them form a membrane layer, as shown in Fig. 1.1.
(b)[2]
State the roles of C and D.
(c)[2]
Structure E is a protein made up of 588 amino acids. Calculate the minimum number of nucleotide base pairs needed in the gene that codes for this protein. Show your working.