Now it's my turn to ask a question What did you guys put for the second part of the frog eggs question, about what effect evaporation of water had? I put the concentration of pesticide increased.... And also, what about the question asking why ten leaves were used in the experiment, measuring water loss in milligrams? For that, I put because the change in mass of one leaf is too small to measure, so ten leaves allows a significant change to be measured.
...or similar words to that effect
10 leaves means the average is simply a division by 10 of the total. And for the frog thing I basically wrote the same thing as you. Less water=greater concentration of pesticide.
Did anyone get stumped on the DNA question with the number of base pairs I probably spent longest on that one I had to draw 2 strands of DNA and everything to get my head around it!
they asked it different to past papers at first i was like but i think it was 74 pairs - i remember getting 20 and 9 and matching the ans A-T and C-G for complementary fit
I hope I got the marks Yeah I didn't even know what the diagram was tbh. so failingatm.
Lol, yeah hopefully grade boundaries will be low. But it was an easier paper than Jan 11. I feel sick now
I hope so, I thought it was harder than Jan 11 though, and I need 121 UMS for an A overall. I felt fine until I came on TSR >.> I hope we both did okay!
K.. lol yeah it was good but you can't really say youve definately got an A. kthanksbye :P
apart from the one about more red blood cells, i think i got everything else right, remember the grade boundaries are usually 65% for an A, i got well over that by counting the marks ( potential marks ) , how did it go for you ?
I hope so, I thought it was harder than Jan 11 though, and I need 121 UMS for an A overall. I felt fine until I came on TSR >.> I hope we both did okay!
How do you know how much you need? Do you know what the ISA grade boundary was?
Well it depends on where we reado ff the graph, so its good to know other people got similer results! Its just a friend of mine did a diffrent methord and got a very small number. (Like 0.05%ballpark)
apart from the one about more red blood cells, i think i got everything else right, remember the grade boundaries are usually 65% for an A, i got well over that by counting the marks ( potential marks ) , how did it go for you ?
The red blood cells was good. I think i messed up on one calculation, the frog question, erm, the DNA base thing cause i didnt realise there were two strands.. woops.. But hopefully i can still get an A? \: