• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

Search results

  1. Noor Ahmad

    A level Biology: Post your doubts here!

    I meant how is the ruler exactly used.how do we position it? I remember i was once trying to place the ruler above the microscope slide and it just covers the specimen. :/
  2. Noor Ahmad

    A level Biology: Post your doubts here!

    Vertical transmission,is the transmission of genetic material,from parents to offsprings. Horizontal transmission is the transfer of genetic material (DNA) from one bacterium to another.
  3. Noor Ahmad

    A level Biology: Post your doubts here!

    It's alright! Thank youu! :)
  4. Noor Ahmad

    A level Biology: Post your doubts here!

    Thank you so much. But i've got a question. do we use the ruler to calibrate the eye piece graticule or do we directly measure the specimen using the ruler?
  5. Noor Ahmad

    A level Biology: Post your doubts here!

    It isn't percentage error i guess. Im not quite sure but is it 50% of the smallest division?
  6. Noor Ahmad

    A level Biology: Post your doubts here!

    And What is meant by uncertainity,how do we measure it?
  7. Noor Ahmad

    A level Biology: Post your doubts here!

    Can some one tell me how do we measure the actual size of the specimen using a ruler? I dont really understand how are we supposed to do that. question 2a(ii) And i'd be grateful if you guys could explain me what's meant by "A revised or new prediction' Q1 (f) Thanks a ton...
  8. Noor Ahmad

    A level Biology: Post your doubts here!

    Do not panick,it isn't difficult. Well,the ornithine cycle is nothing but the urea cycle. Excess amino acids breakdown forming ammonia and ketoacids. Amonnia enters the ornithine cycle where it combibines with carbon dioxide. Here's the cycle. Tried making as simple as possible. Im sure you'll...
  9. Noor Ahmad

    A2 Biology | Post your doubts here

    Can you help me with this question? #question 2 http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Biology%20(9700)/9700_w06_qp_4.pdf
  10. Noor Ahmad

    Needs mathematics 9709 marking scheme for June 2002

    Thank youu!
  11. Noor Ahmad

    My notes for Biology and Physics A2

    Can you explain what does this part mean? Biology AS part. i mean what controls the membrane protein orientation? ref. contribution to fluid nature of membrane ; further detail ; e.g. mainly saturated fatty acids, less fluid e.g. mainly unsaturated fatty acids, more fluid ref. to control over...
  12. Noor Ahmad

    اللهم وفقني يا رب

    اللهم وفقني يا رب
  13. Noor Ahmad

    My notes for Biology and Physics A2

    Thank you so much , that is really helpful :) May god bless you! yeg3alho fe mezan 7asanatak!
  14. Noor Ahmad

    Mathematics: Post your doubts here!

    Can you help me with question 3 (ii) i'd really appreciate it:) http://feezahsalam.files.wordpress.com/2012/04/past-question-on-data-representation-part-20111.pdf
  15. Noor Ahmad

    Needs mathematics 9709 marking scheme for June 2002

    Can you guys give me a link to all the marking schemes for 2001 as well?
View older results
Top