Depth in Biology 2018 Paper Runthrough (OCR A Level Biology AS)

Run-through of the 2018 paper talking you through both the strategies used to be successful in the exam and how the mark scheme works. Either do the paper first (link below) and mark it using the video or you can use the video to work through the paper with me.
Paper link:
www.ocr.org.uk/Images/528495-...
DNA Extraction Link:
practicalbiology.org/bio-mole...
Home DNA Extraction Method: learn.genetics.utah.edu/conte...

[@finmulvaney665]

this man is saving my mocks

[@joannadaniel9396]

Fr

[@sirus6167]

I honestly don't have time to do question papers so here I am listening to the explanations of the answers. P.S the mark scheme is almost useless especially if you don't know how they worked it out

[@shulimiron6415]

what does depolarisation mean?

[@raman7095]

isn't fibrinogen a fibrous protein as it was listed under functions of globular proteins?