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  1. H

    Physics, Chemistry and Biology: Post your doubts here!

    it's ok. it happens!:p
  2. H

    Physics, Chemistry and Biology: Post your doubts here!

    This is an easy way to learn reactivity series of metals: Poor Silly Boys Can Marry Any Zombi If They Like How Can Mothers Save Pretty Girls? Potassium Sodium Barium Calcium Magnesium Aluminium Zinc Iron Tin Lead Hydrogen Copper Mercury Silver Platinium Gold "Hope it Helped;)"
  3. H

    Physics, Chemistry and Biology: Post your doubts here!

    i read that it is purposed that the neurones are not continuous yet still can communicate with each other. if u got any other explaination plz tell me :)
  4. H

    Physics, Chemistry and Biology: Post your doubts here!

    i dont think u r taking biology 0610?!
  5. H

    oh well, good luck

    oh well, good luck
  6. H

    Physics, Chemistry and Biology: Post your doubts here!

    vulva is the external genital organs of the female. vagina recieves the male sexual organ during sexual intercource and it is where the sperms are deposited, while the urethra carries urine from the bladder, in men it delivers both urine and simenal fluid but at different times. (vulva isnt...
  7. H

    what about u?

    what about u?
  8. H

    chemistry, physics, biology, english(2nd lang), math, ICT

    chemistry, physics, biology, english(2nd lang), math, ICT
  9. H

    Physics, Chemistry and Biology: Post your doubts here!

    i'm also taking extended curriculum, in the syllabus they just mentioned the production of lymphocytes not T and B particularly. still it would be better to have some knowledge about them, and here is more information
  10. H

    Physics, Chemistry and Biology: Post your doubts here!

    b lymphocytes are those produced in bone marrow and they have protein on their outer surface while t lymphocytes mature in thymus and they have a t-cell receptor on their cell surface, they are both types of WBCs and play imporrtant roles in defence system. Anyway if u r taking biology 0610, u...
  11. H

    Physics, Chemistry and Biology: Post your doubts here!

    1) The number of stomata (not stomatas) on the upper surface is drastically reduced as the upper leaf surface receives more intense and direct sunlight and tends to lose more water from that surface. 2) This is compensated by increasing the stomata quantity on the lower surface 3) The...
  12. H

    Physics, Chemistry and Biology: Post your doubts here!

  13. H

    Physics, Chemistry and Biology: Post your doubts here!

    yeah it is true i just assumed based on the case. which year is this let me check the marking scheme?
  14. H

    Physics, Chemistry and Biology: Post your doubts here!

    thnx, i just got confused by that answer .:)
  15. H

    Physics, Chemistry and Biology: Post your doubts here!

    yeah i'm aware of that, but still i think that the reason should be related to endo and exo reactions. if not plz expand on ur point of view.
  16. H

    Physics, Chemistry and Biology: Post your doubts here!

    hey do we have to measure angles?!
  17. H

    Physics, Chemistry and Biology: Post your doubts here!

    excuse me, but the answer for Ques4 a(ii) shouldnt it be that the forward reaction in equation one is endothermic and is favored by high temp. where as the forward reaction in equation 2 is exothermic that is why a high yield is obtained at low temp., plz correct me if i am wrong.
  18. H

    Physics, Chemistry, Biology, C.S --> Hardest Questions Compiled

    thanx exploded diper:)
  19. H

    Physics, Chemistry, Biology, C.S --> Hardest Questions Compiled

    i cant get why it is cellulose?
  20. H

    Physics, Chemistry, Biology, C.S --> Hardest Questions Compiled

    i am praying to stop being u and pay some concentration to ques!
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