@Scarecrow &
@beaker I had to do a bit of background reading & watch a few high/secondary school videos as I dropped biology early at school. However it's a challenge I can do at my own pace.
Thank you but you don't understand the problem.
My memory is utterly screwed. Prior to getting ME (thirty years ago) I had an excellent memory. Since then and I don't know the right words for this but I seem to lack the ability to consolidate information; the interface between short term and long term is somehow busted. So I can read and understand (assuming I have the requisite prior knowledge) but I find it impossible to retain a lot of information. It just kind of leaches away, like writing fading to illegibility. What does make it through sticks, it really sticks.............. but not much makes it through.
I have the same problem whether the subject is academic or a novel or film / TV. I've been trying to read a book called 'A Suitable Boy' since it was published in 1993. It's one of the longest novels in English and it just has too many characters for me to remember who's who and what they've done so far in the plot. I've never made it past the first few hundred pages. I've just learned that 'A Suitable Girl' is to be published next year. Oh, crap!
I'll know a treatment has been successfully when I can finally read that damned book!
As far as academic knowledge is concerned, I remain very nearly as ignorant as I was when I was 15.
My capacity to learn is now largely restricted to procedural tasks and logic.