(a)
(a(i))[3]
Describe and explain how the pattern in Fig. 10.1 shows a link between blood glucose concentration and blood insulin concentration after a glucose-rich meal has been eaten.
(a(ii))[3]
Suggest and explain how the pattern in Fig. 10.1 would differ if the meal consisted mainly of starch rather than glucose.
(b)[4]
Glucagon is made by cells in the pancreas called alpha $(\alpha)$ cells. Glucagon binds to G-protein-coupled receptors in the cell surface membrane of liver cells. This leads to G-protein activation. Outline the sequence of events inside the cell after G-protein activation that helps restore the blood glucose concentration to its set point.