AQA BIOL2~3rd June 2013~AS Biology (Now Closed) Watch
Wow two languages, check you out !!
i found it more difficult that how general chem 1 past papers were
yep! Had them exams at the beginning of my exam period so glad that's out of the way
It was much much harder than any of the past papers, hopefully the grade boundaries should be low.
Mechanics or Stats?
This altered protein could lead to an inactive enzyme if the active site has a different shape, as enzyme-substrate complex's cannot form.
Question Paper : http://www.mybookezz.com/ebook.php?u...wyLVFQLUphbjEz
Mark Scheme : http://biofort.files.wordpress.com/2...ms-jan13-1.pdf
This one i hate!!
You inject the protein into the organism, which produces specific antibodies. Then you purify these antibodies. You mix these antibodies with the same protein of a different species. Precipitate will form if they species are closely related?
is this right?:
when talking about air entering stomata- its down the diffusion gradient
when talking about water entering the root hair cells- its down the conc grad
when talking about water entering leaf from xylem- its down the water potential gradient
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Inject blood serum from a to b
The extracted b and mix with c
The antibodies formed in b respond by binding to any corresponding antigens in c
This creates a ppt
The more ppt the more complementary antigens b formed so the more closely related the species are