Biology 9700 - Paper 21

[soccerprinc3]

so X was mitosis and Y was Meiosis?

and what is the advantage of the sickle cell anaemia dissociation graph?!?

 

[citrussino]

Hold on, isn't X supposed to be meiosis and Y mitosis?

 

[soccerprinc3]

i think both of them were mitosis >.<

 

[LimeReem]

delete your post as discussion is only after 24 hours...

 

[melly713]

the questions were application ques nothing like the other yrs it was a bit challenging for me .

 

[mady666]

it wasnt a specific question, the paper overall was tough! many girls did not complete the paper =/
the pattern was kinda change because previous papers have loads of direct questions, but this paper had mostly application questions =/ i hope gt is around 43-46 somewhere

 

[scarface007]

it wasnt a specific question, the paper overall was tough! many girls did not complete the paper =/
the pattern was kinda change because previous papers have loads of direct questions, but this paper had mostly application questions =/ i hope gt is around 43-46 somewhere

really the gals didnt? most of the guys found it easy, only a few arabs were like it was hard.....

just messed up the part in which we had to identify meiosis and mitosis part.....

 

[ramadan]

it was the easiest paper ever, if people think more .

 

[The King XII]

IT WAS EASY.....damn you just needed to think with you're information, thats the problem with students today and GCE A level edexcel, they just memorize and go for the exam, thats bogus and disgraceful, examiners won't be able to discriminate between A* material and non-A* material I mean thank god for CIE, efforts come from depth and understanding, NOT memorization, Im sorry some people didn't do well and, INSHALLAH WITH ALLAH'S GRACE AND KINDNESS, the curve will be low and you'll do fine

 

[ramadan]

IT WAS EASY.....damn you just needed to think with you're information, thats the problem with students today and GCE A level edexcel, they just memorize and go for the exam, thats bogus and disgraceful, examiners won't be able to discriminate between A* material and non-A* material I mean thank god for CIE, efforts come from depth and understanding, NOT memorization, Im sorry some people didn't do well and, INSHALLAH WITH ALLAH'S GRACE AND KINDNESS, the curve will be low and you'll do fine

at last some one who understands

 

[The King XII]

at last some one who understands

Thank you, I assume you did well Alhamdulilah.

 

[scarface007]

the ppr was very easy compared to the pp, dunno y ppl found it difficult :S

 

[The King XII]

It was not bad, few tricky question but I guess i managed to answer everything on time.
Except for the dissociation curve second part, a question about how the shape of the the curve M is beneficial to those with Sickle Cell Anaemia, and the type of division was kinda confusing :/, I thought about writing mitosis for both but I ended with (i) Meiosis (ii) Mitosis.

It was beneficial because obviously person M was in presence of higher pCO2 and due to the Bohr effect unloading of O2 to respiring tissue would be easier since it gives up its O2 more readily, plus i think you had to right this CO2 + H2O ---> HCO3- + H+, H+ + Hb ---> HHb, this causes an allosteric change making it release oxygen nd obviously if more oxugen is available more O2 is released. 3 points inshallah right

 

[The King XII]

It was beneficial because obviously person M was in presence of higher pCO2 and due to the Bohr effect unloading of O2 to respiring tissue would be easier since it gives up its O2 more readily, plus i think you had to right this CO2 + H2O ---> HCO3- + H+, H+ + Hb ---> HHb, this causes an allosteric change making it release oxygen nd obviously if more oxugen is available more O2 is released. 3 points inshallah right

I meant more CO2 is available not oxygen lol

 

[kwazieeekezzy]

it wasnt a specific question, the paper overall was tough! many girls did not complete the paper =/
the pattern was kinda change because previous papers have loads of direct questions, but this paper had mostly application questions =/ i hope gt is around 43-46 somewhere

what do yhu mean many girls, thats sexism...

 

[angelgirl288]

i wont comment on the exam cause i have no clue how i did.. hopefully i reach the A -.-'

i have a question though in paper 1.. 01/M/J/06 - question 22. i don't get it. can sm1 plz explain the question :s
thanx

 

[mady666]

what do yhu mean many girls, thats sexism...

Lol! Actually i do not study in a co educational school, so being a girl i only know how the other girls performed!

 

[geek101]

What did you guys write for the advantages of the dissociation curve of a person with sickle cell anemia?

 

[iceman]

Hahahahahahaha Bro Paper 22 was the easiest of all 2007+ , The highest curve was 47/60, so this might be 47/60 or 48/60, I'm talking about the A.

how u know abt P22...arn't u disscussing p21??

 

[kwazieeekezzy]

Lol! Actually i do not study in a co educational school, so being a girl i only know how the other girls performed!

oh, sure