(a(i))[2]
Name organelles A and B in Fig. 1.1.
(a(ii))[3]
In liver cells, enzymes are attached to the membrane of smooth endoplasmic reticulum. Referring to the functions of smooth endoplasmic reticulum, suggest the advantages of having enzymes attached to the membrane rather than free in the lumen.
(b)[3]
Explain the benefits of using a transmission electron microscope instead of a light microscope when observing a liver cell.