No idea how to do coursework and no one to ask

In the larger scale of things, this is a relatively small issue but this coursework counts for 10% of my module grade. It's a really complex piece with concepts based on an experiment that we did that I have no understanding of. I'm naturally very, very dense so I can't understand things easily and looking at the instructions, I am at a complete loss.
I don't know anyone in my lectures (that's a whole other issue) so I don't have anyone to ask. I'd rather not ask my professor as he has tried to put out many things to help us (online tutorials, notes etc) which I'm embarrassed to admit, I STILL don't understand and I don't want to look like an idiot by asking him. The issue is, I don't understand even the basic concepts. We had a webinar with him last week where we could ask him questions and everyone else in my year were asking him very complex questions about things very far into the coursework.
And I'm over here not even sure what the experiment was about, let alone the calculations, scales, etc.
What should I do? Every time I sit down to try and wrap my head around it, I give up because I just cannot grasp the basics.

What is the subject?

Biology, genomics/pcr stuff

What, running gels, blots, ELISAs...that sort of thing?

Sort of, basically we had to use pcr and some genomics website to identify gene deletions in fungus.. no idea even.