Struggling in s&t.any suggestion?
I know that this suggestion is late for tomorrow's test but you can take a look at this playlist---
https://www.youtube.com/playlist?list=PLwYR7WJw1-QW__WkCBRXG-5nCuiOcum61
Watch it in 1.5-2x and you can cover basics of biology, biotech, nuclear from here.
May be a little time consuming but I feel it is worth it if you are someone who likes learning from videos and need it from the basics. Good luck :)