GENES AND ENVIRONMENT:
To be honest, I cannot completely remember the test that well, but here goes. Hopefully you haven't already done the test.
Do you guys have Ross and Rob?
Ross tends to put very broad questions so you don't need to memorise detail. Like even his exam questions were very broad. He might tell you that during the SWOTVAC tutorial.
Rob tends to make a combination of both general questions and some detailed questions. If the tests are similar, then I would say know the life cycles of the few key ones (off the top of my head - Ascaris, Taenia); if there are the ones that were not covered at all or in detail, then it would just be one of those questions that you could cross all the other ones or something and deduce whether it was correct. I actually enjoyed that component so could better relate to the questions. Just to make things clear, Rob has a tendency to pull random questions as well. Maybe he has changed it for this year, but the end of year exam had questions relating to topics that I thought honestly wouldn't be tested.
The MST was about par with the exam.
At the end of the day, you'd get through it well learning the concepts, because that's what first (and second year to a large degree) are all about.
Edit: Italicised the genera.