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  1. Fatima_Toomii

    AS LEVEL BIOLOGY... discuss here AS students only :)

    Can someone explain to me how HIV works?
  2. Fatima_Toomii

    POST YOUR BIO AND CHEM PAPER 1 DOUBT HERE !!!!

    For Q15 it says that the answer is B. From what I understood of it was that CO2 would diffuse into A, B, C and D. CO2 is not used a lot in A, C, or D so let's assume that they all have the same quantity of CO2. B, on the other hand, is a palisade cell which means its the main site of...
  3. Fatima_Toomii

    Aww THANK YOU!! :D

    Aww THANK YOU!! :D
  4. Fatima_Toomii

    Biology paper 3

    I think it is. After all, protein synthesis involves changing amino acids into proteins and that's what I understood from the figure. Also, that's what my friends wrote. :)
  5. Fatima_Toomii

    Biology paper 3

    I also wrote protein synthesis :/
  6. Fatima_Toomii

    Biology paper 3

    You're welcome :D
  7. Fatima_Toomii

    Biology paper 3

    You're welcome.
  8. Fatima_Toomii

    Biology paper 3

    Advantages of chemical fertilisers: -Easy to store and add to the land. -Releases nutrients quickly. -Shows exactly how much of each nutrient is in the fertiliser. Disadvantages of chemical fertilisers: -It can be washed into rivers and streams where it causes water pollution. -Short-lasting...
  9. Fatima_Toomii

    Biology paper 3

    Advantages of asexual reproduction in plants: -Fast/Plants grow more rapidly. Disadvantages of asexual reproduction in plants: -More competition between plants. -They don't colonise new areas. -Little variation. -Because there is little variation, if these plants are struck by a disease, none...
  10. Fatima_Toomii

    Biology paper 3

    Do you mean natural or chemical fertilisers?
  11. Fatima_Toomii

    Biology paper 3

    You're welcome :D
  12. Fatima_Toomii

    Biology paper 3 prediction

    You're welcome :D
  13. Fatima_Toomii

    Biology paper 3

    X and Y is basically the distance from the start point of the retina to its end (as you can see from the eye diagram in the previous page). The graph is basically showing you that as you go alone the retina (starting from point X) the amount of rods first increases and then suddenly decrease at...
  14. Fatima_Toomii

    Biology paper 3 prediction

    Do you mean the fermenter tanks? :O If so, then they're basically large vessels where an amount of bacteria/fungi is placed. The bacteria/fungi are provided with ammonium salts (to make proteins and nucleic acids) and glucose (for respiration). They are then continuously stirred so they can...
  15. Fatima_Toomii

    Biology paper 3

    Osmoregulation occurs in the collecting ducts found in the nephrons which are located in the kidneys. It's basically the balancing of the amount of water found in your body. The hypothalamus is a part of the brain which also monitors the water potential of the blood (if there is too much water...
  16. Fatima_Toomii

    Biology paper 62 confusion

    I didn't name the mouth because I forgot the correct term for it >.< I thought "mouth" was too... vague. I dunno.
  17. Fatima_Toomii

    Biology paper 62 confusion

    Wasn't it compound eyes because it's an insect? >.<
  18. Fatima_Toomii

    The Movie Times. Best or Worst Movies!

    The Avengers :D Watched it twice, two days in a row.
  19. Fatima_Toomii

    Biology paper 62 confusion

    Bananas DO have starch o_O :p
  20. Fatima_Toomii

    Biology paper 62 confusion

    About naming the flower parts, the anthers should be availabe in larger quantaties to provide many pollen grains, while you only need one stigma for the pollen grain to land on (Also, since it was an insect-pollinated plant, the insects would need to rub against the anthers so the pollen grains...
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