Both muscle and sperm cells are specialised animal cells.
(a) The nucleus of a muscle cell is different from the nucleus of a sperm cell.
Outline one way in which the nucleus is different between these two cells.

[1 mark]

Question 1b
(b)
All specialised cells are adapted to carry out their function.
Describe two adaptations of a sperm cell that enables it to carry out its function.

[4 marks]

Question 1c
(c)
Specialised cells develop from unspecialised cells by differentiation when an organism develops.
What happens when a cell differentiates?