This is a snippet from Tuan Shaik Nurudin's email:
I've gone through the note of Poison Act and from what i realised, almost all parts of the note is coloured. So, i ASSUMED what he meant by coloured highlight is those parts/lines which are red coloured.
As for the biotech tutorial, Dr Taher advised us to do it as it may be helpful. But, we don't have to submit it to him.
Lastly, good luck for the mid sem.