Soalan SPM

1 a) Diagram below shows the structure of a unicellular organism which lives in a freshwater pond.

Explain the function of X in osmoregulation

2)

Figure shows the organelles involved during the synthesis and secretion of an enzyme in an animal cell
a) Name the organelles labelled P and R

b)i) State the function of organelle S
b) ii) Explain the role of organelle Q in the synthesis of the enzyme