Biology Paper 22 Discussion thread.

[thementor]

Was the stomata completely closed? Mine wasn't...it was slightly ajar. I did that to distinguish between the two cell walls...do u suppose they'll accept it

of course they'll accept it...u see at night, although we say that stomata are closed..they are not fully closed..they are slightly open to allow movement of gases..they have to accept it..

 

[Mustafa Malik]

I am loosing marks in 1st and 2nd question...Pray that I dont

yeah hopefully. BTW r u sure that i can score A* if i lose 10 in p2 n 5 in p1??
sorry but m bit nervous..

 

[Aly Emran]

wat

is it possible to get full marks in sec B and C ? section B went awsome for me! but sec A was waay tough

 

[thementor]

is it possible to get full marks in sec B and C ? section B went awsome for me! but sec A was waay tough

remember these words: IN BIOLOGY,CHEMISTRY OR PHYSICS, the examiners never ever ever award full marks in a particular section of the paper....at least 1 mark will be deducted if everything is correct....... agreed Section A was weird :/

 

[thementor]

yeah hopefully. BTW r u sure that i can score A* if i lose 10 in p2 n 5 in p1??
sorry but m bit nervous..

if ur exactly sure about loosing 10 marks in P2, and 5 in P1 and full P6, then my calculation isnt wrong......lets assume for a moment that you loose 10 marks in P2, 5 marks in P1 and 1 mark in p6....even then you get an A*......

 

[Kamihus]

remember these words: IN BIOLOGY,CHEMISTRY OR PHYSICS, the examiners never ever ever award full marks in a particular section of the paper....at least 1 mark will be deducted if everything is correct....... agreed Section A was weird :/

any reference??? i doubt that as the examiner reports tell otherwise

 

[Mustafa Malik]

if ur exactly sure about loosing 10 marks in P2, and 5 in P1 and full P6, then my calculation isnt wrong......lets assume for a moment that you loose 10 marks in P2, 5 marks in P1 and 1 mark in p6....even then you get an A*......

in p6 i may lose upto 2-3 marks , p1 cant say n p2 not 10!!! I just assumed if I, u know!!!
same goes for chem n physics????
One thing more my hopes for A* will revive if i get assurance that my diaphragm part will be right. I did not mention abt alveoli but told wd reference to role of diaphragm in breathing.

 

[Snowysangel]

in p6 i may lose upto 2-3 marks , p1 cant say n p2 not 10!!! I just assumed if I, u know!!!
same goes for chem n physics????
One thing more my hopes for A* will revive if i get assurance that my diaphragm part will be right. I did not mention abt alveoli but told wd reference to role of diaphragm in breathing.

Yeah I did that too! I merely mentioned about alveoli, but I mostly wrote about the organs related to inspiration/expiration and how they will be affected :S how many marks was the question for?

 

[thementor]

in p6 i may lose upto 2-3 marks , p1 cant say n p2 not 10!!! I just assumed if I, u know!!!
same goes for chem n physics????
One thing more my hopes for A* will revive if i get assurance that my diaphragm part will be right. I did not mention abt alveoli but told wd reference to role of diaphragm in breathing.

actually mentioning detail about how a person breathes was not required...u had to mention why breathing difficulties were caused? may be partial credit can be scored....i cant say for sure

Yeah I did that too! I merely mentioned about alveoli, but I mostly wrote about the organs related to inspiration/expiration and how they will be affected :S how many marks was the question for?

The breathing difficulties was Q2(c) which was of 5 marks...Q2(b) 3 marks Q2(a) 2 marks...making the whole of Q2=10 marks.

 

[Snowysangel]

actually mentioning detail about how a person breathes was not required...u had to mention why breathing difficulties were caused? may be partial credit can be scored....i cant say for sure

The breathing difficulties was Q2(c) which was of 5 marks...Q2(b) 3 marks Q2(a) 2 marks...making the whole of Q2=10 marks.

So for 2c we had to write about damaged blood vessels, alveoli, bronchioles etc, collapsed lungs, organs not being able to move properly, excessive mucus formation in the air passages, and all these leading to a reduction or disruption in the gaseous exchange mechanism...us that it?

 

[Snowysangel]

How low do u suppose the threshold for bio could fall?

 

[Mustafa Malik]

actually mentioning detail about how a person breathes was not required...u had to mention why breathing difficulties were caused? may be partial credit can be scored....i cant say for sure

The breathing difficulties was Q2(c) which was of 5 marks...Q2(b) 3 marks Q2(a) 2 marks...making the whole of Q2=10 marks.

actually i explained the role of diaphragm in breathing n wrote that diaphragm wud lose its flexibility and it wont contract n relax easily during inhalation n exhalation. This wud result in pain .

 

[thementor]

how much will i get in the bullet last qstn if i mention lungs gonna be affected and alveoli will not carry proper diffusion of gases+ pain in breathing and O2 not absorbed much causing breathlessness???

by writing this u would get at least 4 out of 5 marks....

 

[thementor]

actually i explained the role of diaphragm in breathing n wrote that diaphragm wud lose its flexibility and it wont contract n relax easily during inhalation n exhalation. This wud result in pain .

I cant say for sure if its correct.....lets c.....

 

[thementor]

But i read at many places that in PHY CHEM and BIO u can score full marks in sec B and C because if everything is mentioned how can they deduct marks? + not only in sciences but in History u can even score full marks in 4 7 or 14 marks questions.

Before candidates grades are given if he/she is obtaining full marks in a particular section, 1 mark will be deducted and then the final grade is produced.......it is only in mathematical sciences that full marks are awarded.

 

[thementor]

So for 2c we had to write about damaged blood vessels, alveoli, bronchioles etc, collapsed lungs, organs not being able to move properly, excessive mucus formation in the air passages, and all these leading to a reduction or disruption in the gaseous exchange mechanism...us that it?

precisely....other reasons should be suitable...for example the sternum being punctured....which would cause extreme pain while breathing.

 

[thementor]

How low do u suppose the threshold for bio could fall?

for A* probably 88-89% for A it will be at 80%..in my opinion.

 

[aneeq247]

Um I forgot some questions from the paper, so I was wondering, was there any question on dialysis in section 2 of the paper?