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  1. H

    Biology Paper 52

    welll.....cud we grow out plant
  2. H

    A2 Biology | Post your doubts here

    wat abt u??
  3. H

    Physics Paper 51 Guess

    ratemeter
  4. H

    A2 Biology | Post your doubts here

    well 52 was kinda normal...nt too easy nt too hard........i m expecting 24-25 marks
  5. H

    Biology Paper 52

    wat wud be gt ...i guess 22......my expectation is 24-25v for my own marks...........do u think it cn go as high as 25??
  6. H

    Biology Paper 52

    wellll........i believe i am correct abt odd even thing.........bt it isnt necessary polant cn have even no. and yet cnt breed cos of not equal no. of sets of chromosomes
  7. H

    bio doubt

    can a cell with odd no. of chromosomes undergo meiosis.............and cnn it grow successfully.........
  8. H

    Physics Paper 51 Guess

    weellll m just amking a wild guess........safet precaution use source handling tool...........store source in lead box wen not in use.........additional detail subtract background count from count rate measured...........background cont measured without the s9ource....GM connected to...
  9. H

    Biology Paper 52

    yea @ question 1......well my cnfusions...cuud we groq out a whole plant from seed and cut sections from its root to make slide???.....and if not y cos it says embryo plant cells not EMBRYO CELLS........ well in the table evidence part that why we cnt successfully breed a cross b hybrid...i...
  10. H

    Physics Paper 51 Guess

    radioactivity
  11. H

    A2 Biology | Post your doubts here

    well u talking about p 52?
  12. H

    Bio p22 and 52

    paper 5 small ....easy bt some triky parts......22
  13. H

    paper 52 biology LIVE discussion

    http://xat.com/biologypaper42 pls..................come on discuss the paper.....it was easy one apart from few parts......and time was no problem
  14. H

    A2 Biology | Post your doubts here

    cnt undrstand help plzz....
  15. H

    A2 Biology | Post your doubts here

    welll cn smone tell how to get an airbuuble formed inside a potometer
  16. H

    A2 Biology | Post your doubts here

    fo example u measured reaction times of ten people b4 drinking alcohol and after drinking alcohol....so u calculate mean time b4 and after and chek using t test whether difference in mean times is just due to chance or significant
  17. H

    A2 Biology | Post your doubts here

    hmm...........still some doubt
  18. H

    A2 Biology | Post your doubts here

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Biology%20(9700)/9700_w07_qp_5.pdf q 3 a (ii) confused.......if there are 114 moths in ungrazed land......there no. shud decrease bt according to null hypotheis it shud remain at 114.........dont knw wat ms...
  19. H

    A2 Biology | Post your doubts here

    the probaillity we are talking abt here is probability of null hypothesis being correct......so if its less than 0.05 Null hpotheis is rejected,....and so on...........this 0.05 level is actuallyy 95 PERECENT PROBABILITY THAT NULL HYPOTHESIS IS CORRECT BT DONT KNW HOW,,,,,,SOME frther maths...
  20. H

    A2 Physics | Post your doubts here

    ???how to use light gates here exactly....i was thinking this...when Ma passes througgh 1st gate timer starts and when it reacjhes 2nd one it stops....am i correct???
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