Biology; Chemistry; Physics: Post your doubts here!

[Spidey21]

If you don't mind its 19 30 (7 p.m) right ..... Thanks for the help anyway....

um yea true

daredevil
would nt the plant b the most active when at 7 am cuz thats when the sunlight is good, and everything is at its peak!!

 

[ashiqbal]

This question can hardly be of 4 marks, thus two reasons with explanation are enough! The 2 reasons you know are the only included in book. So you are good to go

found these points in ms and the question of 3 three marks!
necessary substances can diffuseacross placenta ;
bloods might be of different groups ;
mother’s blood pressure too great ;
ref. possible exclusion of potentially harmful substances ; [max 3]
(e.g. pathogens, R diseases)

 

[malay]

Ooops!just forgot...how many cels r produced by meiosis n mitosis??

 

[Spidey21]

Ooops!just forgot...how many cels r produced by meiosis n mitosis??

2 by mitosis 4 by meiosis!! ...

 

[Mayedah]

Do questions related diodes and transisitors always come in EITHER or OR part !

 

[malay]

2 by mitosis 4 by meiosis!! ...

hehe....tanx

 

[Dukeofwin]

found these points in ms and the question of 3 three marks!
necessary substances can diffuseacross placenta ;
bloods might be of different groups ;
mother’s blood pressure too great ;
ref. possible exclusion of potentially harmful substances ; [max 3]
(e.g. pathogens, R diseases)[/quote
Any way works!

 

[Spidey21]

hehe....tanx

no broblem...

 

[Dukeofwin]

Best of luck to everyone appearing for exams tomorrow!
Papers are surely going to be tough after an lolly-pop Paper6(Speacially P2)
Just keep your calm and do your best, the result will surely be in your favor!
ALL THE BEST

 

[Spidey21]

Best of luck to everyone appearing for exams tomorrow!
Papers are surely going to be tough after an lolly-pop Paper6(Speacially P2)
Just keep your calm and do your best, the result will surely be in your favor!
ALL THE BEST

 

[Dukeofwin]

Damn October/November paper are difficult! They seem a completely different league when compare to May/June.
Your opinion?

 

[Mayedah]

Damn October/November paper are difficult! They seem a completely different league when compare to May/June.
Your opinion?

Yes they are comparatively difficult and checking is also strict !!

 

[Dukeofwin]

Thanks God, i'm appearing for May/June!

 

[malay]

BEST OF LUCK EVERYBODY.. n stop studyin now!!!

 

[Umar Ilyas]

OK Good Luck all, Lets pray the paper comes XTRA easy

 

[sedanx]

what do we have to know about negative feedback and hormones in food production ? and what do we have to know about behavior ? only taxis right ? or also the definition of it ?

hormones like BST is used to increase milk production in cattle - synthetic oestrogen can be used to fatten the chicken or cows for more meat - Auxins can be used for growing roots in plant cuttings - Gibberellins can be used to produce seedless fruits

 

[sedanx]

what do we have to know about negative feedback and hormones in food production ? and what do we have to know about behavior ? only taxis right ? or also the definition of it ?

behaviour: at least know the definition of taxis - when it is positive or negative - n go through the choice chamber experiment of woodlice

 

[kinxi winx]

anyone has sir imran merchants guess papers

 

[ashiqbal]

behaviour: at least know the definition of taxis - when it is positive or negative - n go through the choice chamber experiment of woodlice

Taxis is not included! is it?

 

[convent2012]

explain why most forms of life are completely dependent on photosynthesis?