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  1. G

    A level Biology: Post your doubts here!

    thats a name for the extended structures on the podocytes.
  2. G

    A level Biology: Post your doubts here!

    oi hehe excitement nahee, exam anxiety :o
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    A level Biology: Post your doubts here!

    absolutely. You can insert human fibrinogen molecules into the mice and obtain antibodies complementary to them from its spleen. you can then follow the monoclonal antibody procedure and prepare monoclonal antibodies complementary to the human fibrinogen. when these antibodies are injected into...
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    A level Biology: Post your doubts here!

    Firstly the ETC chain takes place on the inner membranes of the mitochondria. here are a few steps: 1) at the beginning of the ETC the reduced NAD and reduced FAD (which are products of the previous stages of aerobic respiration) split, and give H+ ions and electrons. they are oxidized and...
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    Describe the person above you in one word :D

    if you are in igcse you can post a thread here : https://www.xtremepapers.com/community/forums/cambridge-igcse.11/ and if you are in a levels post one here: https://www.xtremepapers.com/community/forums/international-a-and-as-level.13/ im sure ull find people to help you with business in these...
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    Chemistry P41 How was it?

    Agreed :)
  7. G

    Chemistry: Post your doubts here!

    good luck to you tooo :D and in sha Allah :)
  8. G

    Chemistry: Post your doubts here!

    The enthalpy change of atomization of N2 would be, the enthalpy change when 1 mole of gaseous N atoms form from N2. This reaction would then be: 1/2 N2 (g) > N (g), in order to convert N2 to N atoms only you will need to break the 3 bonds in the structure of N2. Therefore you'll need to see the...
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    A level Biology: Post your doubts here!

    heres the experiment, the pictures are from the mary jones book. so Meselson and this other person decided to prove SEMI CONSERVATIVE REPLICATION. they used E coli (you dont need to know what they grew and what nitrogen source was provided to the organism)....just know there are two isotopes of...
  10. G

    A level Biology: Post your doubts here!

    This is what the mary jones study guide says: Biodiversity can be defined as the range of habitats, communities and species in an area, and the genetic variation that exists within the populations of each species. The greater the ''species richness'' the greater the biodiversity.
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    A level Biology: Post your doubts here!

    HorsePower i asked my teacher, he said that a few ATP molecules are used to push out the H+ ions, but that detail is not needed at this level, but we are only supposed to know that the energy comes from the passage of the electron
  12. G

    A level Biology: Post your doubts here!

    when reduced NAD releases the electron, it is high in enegry, as it passes from one carrier to the next, it becomes less energetic. This energy which it is loosing is helping to pump out the H+ ions. From what ive learnt no ATP molecules are used during the ETC and chemiosmosis. So i say you...
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    Chemistry Study Guide NEEDED!!

    can someone kindly please upload the A level chemistry study guide by David Bevan: Thanks a ton!
  14. G

    Post your LUMS admission decisions here.

    what about the date for overseas applicants? do they tell you even if you ddnt get admission??
  15. G

    A level Biology: Post your doubts here!

    uric acid is one of the unwanted products of protein digestion. creatinine is produced in the muscles when ADP is reconverted to ATP, its done by removing the phosphate group from a molecule called creatine phosphate, when the ADP takes away the phosphate group it leaves behind creatinine which...
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    Countdown to CIE result 22 January 2013

    3
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    What A level subjects do you need for JOURNALISM!?

    and specially if youd like to persue in Advocacy or research journalism. thanks
  18. G

    What A level subjects do you need for JOURNALISM!?

    specially if you wanna apply in Pakistan thanks.
  19. G

    which practical is most difficult

    physics is the easiest procedure wise, curves can make it a bit hard to ace...chem is all about following the instructions right, bio id say is the hardest of the three, it needs the question to be analysed, palnned and then performed. g'luck!
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    Laptop or tablet???

    ZahraShehzad if you really want a tablet, check out samsung note 10.1...END HE!
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