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AQA BIOL5 Biology Unit 5 Exam - 22nd June 2011 watch

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    What about the other one marker where it said write the percentage of uracil in the DNA, it was 0, 0 right?
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    (Original post by gorillaz121)
    There is almost a 0% chance that you will get >22 marks.
    The examiners are told to make it so that roughly 15% of the candidates get above 12 marks for scientific content, if you made no more than one mistake; then you could maybe get 14. 3 for breadth, usually they give 2 for both relevance and QWC and as you have so much I'd expect that. So probably at the most 20-22, hope that helped
    hey how come i would get only 14 for content
    i wrote quite a lot of points in alot of detail
    just wondering
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    (Original post by Benevolence)
    I'm sorry that people have been ignoring you :/

    Some of these questions have been adressed earlier on in the thread.

    If you tell me what you would like to know, I will tell you
    hi i need 100 ums in this for an A
    i was just wondering could you run through your answers on the IAA/NAA question, and the pupa (last question) i think i lost most marks on these too
    i also didnt get 80% for the percentage
    and i think i got the uracilbase % wrong
    also a couple of the restriction mapping q's wrong
    however my essay was okay i think
    so i would be really grateful if you could put down your answers thanks
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    It's ok AQA i didn't really want to go to university anyway... *******s.
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    (Original post by choc1234)
    hi i need 100 ums in this for an A
    i was just wondering could you run through your answers on the IAA/NAA question, and the pupa (last question) i think i lost most marks on these too
    i also didnt get 80% for the percentage
    and i think i got the uracilbase % wrong
    also a couple of the restriction mapping q's wrong
    however my essay was okay i think
    so i would be really grateful if you could put down your answers thanks
    does anyone remember the questions for siRNA? And how many marks the questions on siRNA were out of in total?
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    do you have to hit the 4 points in the essay - genes, cells, ecology and something else? i only wrote about the nitrogen, carbon, oestrous, krebs, calvin and didnt talk about anything to do with genes. will i have definitely have lost breadth marks/scientific content marks?? thanks
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    (Original post by lou12)
    does anyone remember the questions for siRNA? And how many marks the questions on siRNA were out of in total?
    i think they asked how siRNA will affect protein synthesis and how it can be used to treat disease... maybe another qu. too?
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    for the lysosomes i put that their numbers increased as lysosomes functions are to digest worn out organelles/cells etc
    for the rna in the first part i put it decreased because protien wasnt being made as it wasnt being required - im guessing this is 0 marks
    for the hydrolysos condensationi just put that cond is required to join lots of amino acids together via peptide bonds
    for the seeds one i put there is variation as its sexual and so different shaped leaves will be prod for example leading to diffferent yields
    for the chromosone one i put that it depends on the dna i packed and coiled into the chromosone - i believe this is wrong
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    (Original post by Teva)
    do you have to hit the 4 points in the essay - genes, cells, ecology and something else? i only wrote about the nitrogen, carbon, oestrous, krebs, calvin and didnt talk about anything to do with genes. will i have definitely have lost breadth marks/scientific content marks?? thanks
    You pulled from 5 different areas, although carbon and nitrogen could be considered as 1, so you have got the 4, so you got the breadth marks.

    I managed to pull from 5, as i shoehorned the cell cycle in.
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    (Original post by TlanTlan)
    It's ok AQA i didn't really want to go to university anyway... *******s.
    hey could read my post and help me out htanks
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    oh yeah, what did people put for why every plant will not respond in the same way to NAA uptake through the lower and upper surfaces? i put because some plants wont have a waxy cuticle... is this feasible? :L
    ..and for the seeds one i put you dont grow from seeds because theyre not genetically identical and its a much slower process? what did other people think?
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    And what was the qu about the upper and lower leaves and something about NAA
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    (Original post by lou12)
    And what was the qu about the upper and lower leaves and something about NAA
    i put on the lower epidermis there are stomata so the uptake of it will be quicker
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    i really hope around 55 is an A
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    (Original post by lou12)
    And what was the qu about the upper and lower leaves and something about NAA
    i put quicker uptake on lower due to no upper waxy cuticle being hard for NAA to permeate through or something...
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    What was the question for the % of uracil ? Was it % of uracil in the DNA or in the mRNA because im not sure if i read it right i thought it was mRNA so i put like 21 and 18 but obviously if it was DNA it would be 0 and 0 ??
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    (Original post by Teva)
    oh yeah, what did people put for why every plant will not respond in the same way to NAA uptake through the lower and upper surfaces? i put because some plants wont have a waxy cuticle... is this feasible? :L
    ..and for the seeds one i put you dont grow from seeds because theyre not genetically identical and its a much slower process? what did other people think?
    What was the question aboutseeds??? I just can't remember anything about seeds????thanks
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    (Original post by choc1234)
    i really hope around 55 is an A
    What did you say for the evidence in the table of the cells being totipotent
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    (Original post by lou12)
    What did you say for the evidence in the table of the cells being totipotent
    Callus was produced.
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    (Original post by olimyster64)
    What was the question for the % of uracil ? Was it % of uracil in the DNA or in the mRNA because im not sure if i read it right i thought it was mRNA so i put like 21 and 18 but obviously if it was DNA it would be 0 and 0 ??
    I hope it was asking about mRNA, because I put 18 & 21 % too :/

    (Original post by choc1234)
    for the lysosomes i put that their numbers increased as lysosomes functions are to digest worn out organelles/cells etc
    I said the number of lysosomes would decrease with age, because fewer lytic enzymes are needed, because most breaking down of proteins occurs in the early stages of pupal development. You might be right though - I mean, I was close to saying the numbers would increase, but I guess we'll just have to wait and see.
 
 
 
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