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  1. A

    BIO PPR 1 V1 <3

    Yeah Sure :)..I found the most polluted organism question quite challenging..and also the urine question(i didnt study this part) and i almost gave a wrong answer for question 1 but i finally erased it b4 handing over the paper!! Also the question about the bacteria...i did digestion but i didnt...
  2. A

    BIO PPR 1 V1 <3

    Ive never felt better since the start of the Igs :)..It was good al hamdulilah except for a few questions..wbu how was ur paper??
  3. A

    BIO PPR 1 V1 <3

    Rahma Abdelrahman see i told u that the question about organs and stuff would not come :D
  4. A

    BIO PPR 1 V1 <3

    Yesssssssssss thanks for posting it..it made me relax :)
  5. A

    Physics, Chemistry and Biology: Post your doubts here!

    I dont understand this question too!!
  6. A

    Physics, Chemistry and Biology: Post your doubts here!

    The question shows that the oxidation state will remain the same as it says b4 and after the question chromate( VI ) so the answer is either C or D. KOH is an alkali(soluble base) and when an excess of any alkali is added the ph of the mixture increases so the answer is D :)
  7. A

    Physics, Chemistry and Biology: Post your doubts here!

    I guess im late now..u probably finished your exam :P
  8. A

    Physics, Chemistry and Biology: Post your doubts here!

    Guys listen to Rahma Abdelrahman she knows best about this whole organ tissue thing :D
  9. A

    Physics, Chemistry and Biology: Post your doubts here!

    An enzyme is a biological catalyst that speeds up the rate of the reaction. I guess that answers your question :D
  10. A

    Physics, Chemistry and Biology: Post your doubts here!

    LOL OK fine!!
  11. A

    Physics, Chemistry and Biology: Post your doubts here!

    Ok ill show what is wrong in what u say..Oestrogen doesnt repairrrr the uterus lining it builds it from scratchhhh and u can c this in the graph where in the 1st week the uterus lining is being built not REPAIRED and in the same week the level of oestrogen increases!!
  12. A

    Physics, Chemistry and Biology: Post your doubts here!

    And thats what i said..i said oestrogen builds up the uterus lining :/
  13. A

    Physics, Chemistry and Biology: Post your doubts here!

    Read the following sentence>>These hormones stimulate the ovaries to secrete oestrogen hormone, the function of this hormone is to rebuild the lining of the uterus again once menstruation is finished. I copied it from here http://www.xtremepapers.com/revision/gcse/biology/reproduction.php
  14. A

    Physics, Chemistry and Biology: Post your doubts here!

    And if u say that oestrogen is used to repair the lining then how is it built in the 1st place???????????
  15. A

    Physics, Chemistry and Biology: Post your doubts here!

    I know my explanation is right trust me..Its from a book!
  16. A

    Physics, Chemistry and Biology: Post your doubts here!

    Well the graph is to assist you. If u notice at the time of ovulation(2 weeks) the amount of oestrogen and progesterone both increase in the graph itself :)
  17. A

    Physics, Chemistry and Biology: Post your doubts here!

    rate*
  18. A

    Physics, Chemistry and Biology: Post your doubts here!

    Ok..U knw that ovulation is the release of the egg from the ovary. When an egg is released from the ovary the amount of oestrogen increases to build up the uterus lining just in case fertiliztion occurs..along with that the amount of progesterone also increases to maintain the thickness of the...
  19. A

    Physics, Chemistry and Biology: Post your doubts here!

    Nope but the question said which tube would contaion most sugar after one day. But in general the if the concentration of the substrate increases the enzyme will have more substrate to work on so the rete will definitely decrease.
  20. A

    Physics, Chemistry and Biology: Post your doubts here!

    Is it right??So that i dont explain something which is wrong :P
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