(a)[3]
Use the cells labelled 1 to 5 in Fig. 4.1 to identify the cell in which: (i) the nuclear envelope is reforming, (ii) the spindle starts to form, (iii) transcription and translation are occurring at a high rate.
(b)[2]
Cell 2 is at a stage of mitosis that comes before the stage shown in cell 1. Outline the changes that would happen as the stage in cell 2 progresses to the stage shown in cell 1.
(c)[1]
Suggest why some cells in Fig. 4.1 look empty, with neither a nucleus nor chromosomes visible.