(a)[1]
Use X to mark a point on the sketch graph in Fig. 8.1 where light intensity is limiting the rate of photosynthesis.
(b(i))[1]
State the name of the enzyme that makes cDNA from an mRNA template.
(b(ii))[1]
State the name of the protein type that controls gene expression in plants.
(b(iii))[3]
Suggest why a greater number of genes were switched on only in plants growing in high light intensity compared with the smaller number switched on only in plants growing in low light intensity.