Biology Paper 22 Discussion thread.

[ritx]

rem
remember that in selective breeding, only similiar plants or plants of the same species can breed...in the same way take an example you cannot cross a lion with a cheetah....right? but genes can be transferred irrespective of the species......for example there is a type of jelly fish which has a gene which causes the jelly fish to give a blue colour when it is in stress.....that gene was inserted into a sheep which also glowed blue......
since the question said varieties of colours, you cannot get a very large variety through selective breeding, because only limited alleles/genes are involved....however through genetic engineering the case is totally opposite.

True dat. Selective Breeding was not the ONLY thing i wrote in my answer by the way

 

[thementor]

True dat. Selective Breeding was not the ONLY thing i wrote in my answer by the way

that's a compelete answer both are much better

 

[thementor]

true

w
That's just a layman term 'viral infection'.. Basically infections come from bateria. why are we at each other's throats over something not even relevant to Bio P2? lol

.true...but it isnt wrong to write viral infection in ur answers....anyway....i think that the following organs are acceptable
Stomach/Liver/Pancreas/Lungs, Organs like heart and intestine are not acceptable

 

[AhsanAfzal]

true
.true...but it isnt wrong to write viral infection in ur answers....anyway....i think that the following organs are acceptable
Stomach/Liver/Pancreas/Lungs, Organs like heart and intestine are not acceptable

not even duodenum???? stomach is not acceptable it was in the question

 

[thementor]

not even duodenum???? stomach is not acceptable it was in the question

im talking in general that stomach is acceptable.....i knw u cnat mention it....and no duodenum is too far away to be under the threat of any serious infection...it can be infected....but there is not a high threat..very low...but maybe the scheme offers an exception..you never knw ...just pray inshallah....all will be gd

 

[robinhoodmustafa]

im talking in general that stomach is acceptable.....i knw u cnat mention it....and no duodenum is too far away to be under the threat of any serious infection...it can be infected....but there is not a high threat..very low...but maybe the scheme offers an exception..you never knw ...just pray inshallah....all will be gd

Is Spleen Allowed?

 

[thementor]

Is Spleen Allowed?

ummm....i guess yeah.....

 

[robinhoodmustafa]

ummm....i guess yeah.....

And Do u think this time the percentile or grade threshold for bio will be low?

 

[passion hunter]

if it had been above the diaphragm only then lungs would be exposed to infection....kidneys is also wrong..

 

[passion hunter]

not even duodenum???? stomach is not acceptable it was in the question

listen the organs near the stomach would be correct...those joining the stomach are oesophagus and duodenum so i suppose they are correct...dnt know if oesophagus is an organ...

 

[passion hunter]

And Do u think this time the percentile or grade threshold for bio will be low?

umeed par dunya kaim hai

 

[robinhoodmustafa]

umeed par dunya kaim hai

People Said Last Year It was 65 par A

 

[*Anonymous*]

l
liver and lungs is correct...very small chances of intestines being correct

I wrote diaphragm and liver????

And can you tell me what was the organ B???
And the differences between the blood vessels???
And the functions of J and L or whatever they were in the fermenter last part???

 

[thementor]

And Do u think this time the percentile or grade threshold for bio will be low?

course i do

 

[thementor]

I wrote diaphragm and liver????

And can you tell me what was the organ B???
And the differences between the blood vessels???
And the functions of J and L or whatever they were in the fermenter last part???

diaphragm is not exactly an organ.....
Kidney
Differences btween composition of ureter and renal artery
J-was the sparger/aeration device which provided oxygen
L- was the opening from which the nutrient broth was added.....

 

[Snowysangel]

ea

exactly.... genes were transfered from another plant which had larger flower spikes and had a variety of colours.
But the question was actually 5 marks,didnot know how many keypoints it had

Have u looked at the cultivated and wild bananas question? It either came last year or the year before that. The lupins questions was exactly the same as that one! And no no wild lupins can be asexually grown...there's a name for it...u can check on google

 

[ritx]

I wrote diaphragm and liver????

And can you tell me what was the organ B???
And the differences between the blood vessels???
And the functions of J and L or whatever they were in the fermenter last part???

Organ B was Kidney.

Differences in the contents of renal artery and ureter respectively:

1)Glucose present, glucose absent,
2)Amino acids present, amino acids absent,
3)relatively less urea uric acid and creatinine, the contrary in other column
4)white blood cells present, W.B.Cs absent.

J was the inlet war pouring the micro-organism culture mixed with nutrients like ammonium sulphate glucose etc/
L was the sparger that blows sterile oxygen in the fermenter for aerobic respiration of the micro-organisms.

 

[thementor]

Have u looked at the cultivated and wild bananas question? It either came last year or the year before that. The lupins questions was exactly the same as that one! And no no wild lupins can be asexually grown...there's a name for it...u can check on google

yeah wild lupins cant be grown asexually.........and that question cam in June 2011 5090/21..they can only grow sexually.....but commercailly produced lupins grow asexually....

 

[thementor]

wat d

I wrote diaphragm and liver????

And can you tell me what was the organ B???
And the differences between the blood vessels???
And the functions of J and L or whatever they were in the fermenter last part???

did u write the same answers as I posted

 

[ritx]

Diaphragm is a sheet of muscle TISSUE