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

  • View Poll Results: Are you resitting this unit?
    YES!
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    NO!
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    (Original post by NRican)
    Anyone help me answer Q4cii here http://live.kerboodle.com/NT3/NTLS_R...est_launch.pdf
    TGGTC, stops after the first cytosine.
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    (Original post by .Hayley.)
    How are people revising for the essay part? Ive gone through some AS and unit 4 stuff but dont know what else to do :/ ???

    Thanks
    I've basically done the same thing, and i've tried finding some articles/examples out of the spec too, bbc sci/environment is really helpful for that, it's got some great articles
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    (Original post by gorillaz121)
    TGGTC, stops after the first cytosine.
    Actually I've got it now, it will be AC because its from the opposite base pair.
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    (Original post by Tericon)
    Four fragments made, so draw a line like this : ------------------- and then mark it until you get four fragments, like this:

    ----I-------I----------I------ = three
    Thanks so much !
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    (Original post by NRican)
    Actually I've got it now, it will be AC because its from the opposite base pair.
    Yup AC looks good .
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    I really doubt Oestrous cycle is going to come up this time. Which is good! It was one of the main questions in June 2010.
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    Okay, seriously. Did Unit 1 actually happen, because I remember NOTHING.
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    (Original post by User12399)
    I really doubt Oestrous cycle is going to come up this time. Which is good! It was one of the main questions in June 2010.
    I really hope your right! I hate the oestrous cycle
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    (Original post by appleschnapps)
    Okay, seriously. Did Unit 1 actually happen, because I remember NOTHING.
    Read over it again, you will find it comes back to you fairly easily depending on how well you learned it back then!
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    How do I work out how many sequences are made in like say 6 cycles when starting from 2 strands of DNA?
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    What was the unit was the essay on the old spec? God knows how many pdfs ive downloaded trying to find essay MSs
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    Here's a little revision tip I learned from someone- if you're struggling with long processes eg. transcription, fingerprinting, contraction or just want to make sure you remember them all correctly, then apparently the best way to do it in a short period of time is half an hour before going to bed write out everything you know without looking at the book, now look at the book and make corrections and - make sure this is the last thing you do before going to bed, then in the morning re-read the book if you have time.

    It may sound weird but it's worked for me so far
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    (Original post by User12399)
    How do I work out how many sequences are made in like say 6 cycles when starting from 2 strands of DNA?
    Its doubled every time.

    so cycle 1= 2 x 2 (as two strands) = 4

    cycle 2 = 4 x 2 = 8

    cycle 3 = 8 x 2 = 16

    cycle 4 = 16 x 2 = 32

    cycle 5 = 32 x 2 = 64

    cycle 6 = 64 x 2 = 128
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    (Original post by NRican)
    Actually I've got it now, it will be AC because its from the opposite base pair.
    wouldn't it actually be AGC ?
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    (Original post by appleschnapps)
    Okay, seriously. Did Unit 1 actually happen, because I remember NOTHING.
    Same I just started going over the immunity stuff, I can't remember any of it :/ Are you going to try and read over it all? Or just some main topics? Too much to get done
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    gah, hate this essay!
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    I'm dreading the exam tomorrow (Like if all the questions are about everything I DON'T know)

    So gonna cram some more right now. At least it's my last exam.
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    can someone please please help me on:
    stem cells!
    majorrrrrrrrrr rep!
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    (Original post by User12399)
    How do I work out how many sequences are made in like say 6 cycles when starting from 2 strands of DNA?
    2^number of cycles X number of DNA strand
    So, 2^6 X 2 = 128
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    (Original post by .Hayley.)
    How are people revising for the essay part? Ive gone through some AS and unit 4 stuff but dont know what else to do :/ ???

    Thanks
    Helloooooo

    I've got a list of past essay questions, and I'm making plans for each of them, then trying to remember the information i write down. Hopefully you can make what you know fit the title. you need to include info from 3 kingdoms, e.g. humans plants bacteria fungi etc. or from 3 different units e.g. unit 4 unit 5 unit 1. to get full breadth marks and I read that its important to be specifically biological in everything you say. For example if you got a question about hormones and you wanted to write about insulin production. rather than saying: 'insulin is released into the blood to remove glucose', you would say: 'insulin is released from the Beta cells of the islets of langerhans in the pancreas, where it is released into the blood to reduce glucose by...etcetcetc.' just adding contant detail where it's not really relavant shows you know alot of biology and thats all they want about synopicity really.

    hope thats helpful!
 
 
 
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