Question 1
Paper 2Easy6 marksIn a mammal, glucose is transported in the blood and stored in liver cells as glycogen. Figure 1 shows two monosaccharides in ring form and a fragment of glycogen.
(a)[2]
State which of X and Y is a pentose and which is a hexose.
(b)[1]
State one feature visible in Figure 1(b) that contributes to the compact nature of glycogen.
(c)[3]
Outline how the solubility and chemical stability of glucose relate to its transport in the blood, and state the benefit of glucose oxidation in cells.