Biology Paper 6 (6BI08) 2012 Official

mm, because the weedkiller was a growth regulator and the weeds had broad(!) leaves, i wrote that when the growth regulator is added, the weeds grow shoot and they use all of their energy to form more shoot and they wont produce the broad leaves so they wont photosynthesize. they'll grow in height and then die.. dont know it its correct :/ that was the only thing that came to my mind that time

i found this on a site ''Verdone Extra is a hormone weed killer, it affects the growth hormone on broad leaved weeds, encouraging them to grow at a fast rate which they cannot sustain, causing the weeds to literally grow themselves to death!''
source :http://www.lovethegarden.com/product-details/verdone-extra-ready-to-use
so i think that we'll both get 1 mark for mentioning it inhibits the growth enzymes ,im not so sure about the second mark though D:

I'm so angry at myself.

For the question on why the Weedkiller kills the Broad Leaved Weeds, I wrote about how the Weedkiller contains proteins that bind with receptors on the cell surface membrane causing chemical changes and shunting growth then killing it. Completely forgetting that IAA was mentioned, even then I had completely forgotten what IAA was because in the week and a half before this exam I didn't even bother looking at any Unit 4 or 5 syllabus.

Also in the habituation graph I drew a bloody bar graph instead of a lined one. So annoying.

I also did not have enough time to finish off Question 3 part C. So I'm pretty much screwed.

how were we supposed to know how the heck weedkiller kills weeeeed ??!!!!! ARRGHHH it isnt even in our syllabus !!!! edexcels a troll ! well, i wrote that IAA is an auxin and thus will cause cell elongation it will cause cell walls to become elastic and stretchy, thus water will run into the cell by osmosis and cause the cell to lyse.......i wrote thi sas this is IN THE SYLLABUS ! im so pissed form edexcel !!!!!!!!!!!!

You werent supposed to know how the weedkiller effects the weed plants..
The questions was - How "effective" is the weedkiller in killing the weedplants and not harming cereal plants
You weere supposed to sample the area.....
Calcualte the percentage cover of weedplants in a area without weedkiller
comapred to the area with weedkiller.......

Dude its okay chilll
cover up in your other exams

And u werent supposed to know weedkiller kills weed
It was a sampling experiment using quadrats and stuff
to see how eefective it is

ummmm. im not a dude.

and im talking about 1d it asked HOW does it kill !! DUHHH! !!!!

You were only meant to suggest for the Weedkiller question so what you wrote could most probably be correct!

As for the habituation graph it was actually meant to be a scatter diagram.

For that graph, did you guys see that there were 2 anomalies involved? Like the trend was going down but there were 2 points that went up? Did any of you get that?!

Yeah, there were two anomalies, one was at point 2 and the other was at point 6 but you just needed to write down one of the two