1. Read graphs carefully! Look at both axis and before answering questions make a statement to yourslef. e.g. as the size of the nanoparticle increases the % of bacteria killed decreases.
2. Remember that in % killed, the higher % is better aka 100% than a lower%!
3. Always try to link a question about an unseen example to a concept covered!- 9 times out of 10 it is linked to something you already know.