(a(i))[2]
For each cell, give the name of the stage of the cell cycle shown in Fig. 3.1. cell A: cell B:
(a(ii))[4]
Describe what happens during the stage of the cell cycle named for cell A in (a)(i).
(b)[2]
The magnification of Fig. 3.1 is $\times 5000$. Use it to calculate the diameter of the nucleus of cell B between lines P and Q. Show your working and give your answer to the nearest micrometre ($\mu\text{m}$).
(c)[3]
State the advantages of using light microscopy instead of electron microscopy when studying the cell cycle.