Edexcel A-level Salter's-Nuffield Advanced Biology Papers 1, 2, 3 (9BN0 01-03)

I thought it was pretty good, most of the 4 marks were brilliant especially the lungs and the DNA replication one, multiple choices were also easy, as with the maths, the most difficult question I though was the antibiotic 6 marker. How did you find the question about how a gene can give rise to more than one protein? was it about exons and intron?

I thought it was pretty good, most of the 4 marks were brilliant especially the lungs and the DNA replication one, multiple choices were also easy, as with the maths, the most difficult question I though was the antibiotic 6 marker. How did you find the question about how a gene can give rise to more than one protein? was it about exons and intron?

The inflammatory response one was good. Wrote about inflammation and phagocytosis and stuff

did you talk about mast cells secreting histamine? I wasnt sure becuase it wasnt talking about a cut it was talking about infection

I mentioned histamines by WBCs making histamines that increased permeability of capillaries and leak plasma which are antibodies and how they increase blood flow by dilating arterioles. Increased blood flow means increased WBCs, inflammatory response and increased metabolic activity with heat stops pathogens reproducing

What a brilliant exam that was without any questions linked to plants or photosynthesis for a change

What a brilliant exam that was without any questions linked to plants or photosynthesis for a change

yh i talked about introns exons splicing stuff for that q. for the antibiotics 6marker, i waffled and just repeated data
its weird that specific immunity didnt come up a lot

I mentioned histamines by WBCs making histamines that increased permeability of capillaries and leak plasma which are antibodies and how they increase blood flow by dilating arterioles. Increased blood flow means increased WBCs, inflammatory response and increased metabolic activity with heat stops pathogens reproducing

I think i might have misread that question- did it asks about how inflammation happens or something slightly different. I wrote about histamines being released and how that causes inflammation at an infected site, not about white blood cells.

I mentioned histamines by WBCs making histamines that increased permeability of capillaries and leak plasma which are antibodies and how they increase blood flow by dilating arterioles. Increased blood flow means increased WBCs, inflammatory response and increased metabolic activity with heat stops pathogens reproducing

I wrote abt what triggers inflammation the processes. Talked abt vasodilation of the arteries, permeablility??

how did you guys find it compared to past papers?

I mentioned histamines by WBCs making histamines that increased permeability of capillaries and leak plasma which are antibodies and how they increase blood flow by dilating arterioles. Increased blood flow means increased WBCs, inflammatory response and increased metabolic activity with heat stops pathogens reproducing

it acc wasnt too bad there wasnt much application the questions were pretty straight forward but the wording of some of them were meh, like uno part b to q 1 it was like describe how the amplified DNA could be prepared to be analysed in gel electrophoresis, were u meant to talk about gel electrophoresis or PCR

it acc wasnt too bad there wasnt much application the questions were pretty straight forward but the wording of some of them were meh, like uno part b to q 1 it was like describe how the amplified DNA could be prepared to be analysed in gel electrophoresis, were u meant to talk about gel electrophoresis or PCR