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  1. S

    A level Biology: Post your doubts here!

    I finished the past papers , but I feel like I should be practicing more questions , any advices please?
  2. S

    A level Biology: Post your doubts here!

    I read the marking scheme and it's written one correct labeling from: then they included cortex XS
  3. S

    A level Biology: Post your doubts here!

    Oh ok then thanks oh , okay then , thanks a lot , one more question , when drawing the epidermis , two lines should be drawn to represent the thickness right?
  4. S

    A level Biology: Post your doubts here!

    I think it depends on the specimen given , so I guess in each situation the situation the drawing differs , PhyZac in that specimen I guess we should draw what we saw that makes more sense :)
  5. S

    Chemistry: Post your doubts here!

    I hope you understand from me . If 50% of the nitrogen tetraoxide dissociate then 0.5 moles remain if it was one mole , if 0.5 remains from nitogen tetraoxide then 1 mole of the product is formed because the ratio of moles is 1:2 . so the pressure constant would be the partial pressure of the...
  6. S

    A level Biology: Post your doubts here!

    So there isn't any cortex? that's the double line you're talking about right? Thank you so much for the encouragement :D
  7. S

    A level Biology: Post your doubts here!

    Yeah I didn't know I was supposed to draw that hump hehe. I don't understand what's an annotation , it means four tissue layers? because it's written two annotations to describe two tissues! thanks a lot for your opinion:)
  8. S

    A level Biology: Post your doubts here!

    Oh okay , I think I got it , apparently I stink in plan diagrams:( . Thanks a lot that was very beneficial :) I'll keep the points in my mind. My exam is on 28th of May. okay this is another plan diagram , do please tell if it satisfies the requirements , the drawing is given in paper 31 Oct/Nov...
  9. S

    Chemistry: Post your doubts here!

    hey everyone al salam allaykom. I have doubts in Q.5 P1 Oct/Nov 2003, I don't know get it the only "big" leap in the ionisation energies is between the 5th and 6th , but how there's only 3 electrons in the outer shell? And in Q.18 why is the answer D , isn't there hydroxide ions in the...
  10. S

    A level Biology: Post your doubts here!

    yes I got it :) , here it is :D ...
  11. S

    A level Biology: Post your doubts here!

    where is the spongy mesophyll layer? Thank you so so much :) , ok I'll do that soon and upload it :D . Thanks again , really appreciate it :)
  12. S

    A level Biology: Post your doubts here!

    Thanks a lot for posting it :D
  13. S

    A level Biology: Post your doubts here!

    I have a problem in drawing the tissues , but thanks that was a bit helpful :)
  14. S

    A level Biology: Post your doubts here!

    yeah me too I have problems with plan diagrams , can any help please??
  15. S

    A level Biology: Post your doubts here!

    I should put the scale between the two lines given ? thanks a lot for the help :D GOD bless you.
  16. S

    A level Biology: Post your doubts here!

    yes sure , but how do I do that :S?
  17. S

    A level Biology: Post your doubts here!

    hey everyone , al salam alaykom . I have a question in p1 year M/J 2003 question 7 . Am i supposed to measure the distance using the scale , convert to micro or nanometres then divide by 5000?
  18. S

    Chemistry: Post your doubts here!

    hello everyone , al salam alaykom. Can any one help me out in question 15 year Oct/Nov 2012 p1? I tried to find the number of moles of the compound then divided the mass with it to get the Mr of the compound but it was wrong , what am I supposed to do? And in question 3 is what the shape pf...
  19. S

    Chemistry Application Booklet: Mistakes and Corrections!

    Is there for biology?
  20. S

    Tips For 31-40 (Chemistry MCQ's Paper 1)

    Thanks that was helpful :)
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