Use the space provided to draw the ring structure of one $\beta$-glucose molecule.
$\beta$-glucosidase was obtained from two different bacteria, Agrobacterium tumefaciens and Thermotoga maritima. Fig. 4.1 presents the findings of an investigation into how temperature, from $0\,^{\circ}\text{C}$ to $100\,^{\circ}\text{C}$, affects the activity of each enzyme. L is the lowest temperature at which activity of each enzyme was observed. H is the highest temperature at which activity of each enzyme was observed.
Using Fig. 4.1, describe how the results for enzymes A and T differ.
Both enzyme A and enzyme T act on cellobiose. Their primary structure is similar, though not exactly the same. Suggest how similarities and differences in the primary structure of the two enzymes could help to account for the results obtained in the investigation.