hmm
"explain how cell ultrastructure and the co-ordination activities of cells, tissues and organs contribute to macroscopic processes in organisms."
i never heard the word ultrastructure before!
though if its a prac exam...
just look over your prac book, and in the "students:" (2nd column) of the syllabus.
odds are it will be a prac youve done before in class, or a variant of one.
sorry i cant help anymore, but it does seem a bit odd!