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* Biology Higher level 2011 * (one thread please)

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    #722
    Geog ariphic
    Registered Users Posts: 163 ✭✭Geog ariphic


    Oh bugger.
    I posted an apology but its not here...keep getting signed out.
    I did just loose the head a bit Little Miss Lost, it was my problem, not yours.
    Wan't trying to offend you at all. Sorry.


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    #723
    QueenOfLeon
    Closed Accounts Posts: 5,109 ✭✭✭QueenOfLeon


    The question was too vague. I do think that the answer was 20, but it wasn't really worded correctly. But in the grand scheme of things...it was in Question 1, where you get marked for 5 answers out of 6 questions. If you had gotten all the other parts right (which were relatively basic) then the protein one isn't going to count for you at all. Chill, relax, forget about it, go enjoy your summer or get ready for the rest of your exams! :P


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    #724
    J_E
    Closed Accounts Posts: 5,734 ✭✭✭J_E


    Chances are they won't mark it for a lot if the majority of people got it wrong.


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    #725
    sarah.
    Registered Users Posts: 99 ✭✭sarah.


    Ok people need to stop worrying now and just enjoy the summer/get ready for the last few exams! I worried a lot about little things like the protein question as well but now its time to end the post mortem on Biology! Concentrate on doing well in other subjects you may have left or on having the best summer yet! :D


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    #726
    Platinum2010
    Closed Accounts Posts: 452 ✭✭Platinum2010


    sarah. wrote: »
    Ok people need to stop worrying now and just enjoy the summer/get ready for the last few exams! I worried a lot about little things like the protein question as well but now its time to end the post mortem on Biology! Concentrate on doing well in other subjects you may have left or on having the best summer yet! :D

    Yeah ,They will know how to mark it themselves , we dont know the markin scheme so no point in stressing


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    #727
    JT133
    Registered Users Posts: 4 ✭JT133


    "How many common amino acids are found in proteins?"

    The answer that the marking scheme will most likely be looking for is 20, as this is the standard amount in the genetic code of most organisms, including humans. However 21 and 22 should be acceptable answers too, as certain organisms contain an extra amino acid sequence specified in their genetic code which is translated also, such as Selenocysteine in some bacteria and Pyrrolysine in certain archaea.


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    #728
    Avogadro1
    Closed Accounts Posts: 2 ✭Avogadro1


    Geog ariphic wrote: »
    "The 21 amino acids found in eukaryotes"....
    Amino_Acids.svg
    "The 21 amino acids found in eukaryotes".... 8o

    i think it says 20 in our biology book not 21


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    #729
    Geog ariphic
    Registered Users Posts: 163 ✭✭Geog ariphic


    JT133 wrote: »
    ...such as Selenocysteine in some bacteria and Pyrrolysine in certain archaea.
    Are archaea eukaryotes? Just from the name i'd imagine they aren't but i've no idea - 21 for eukaryotes is what wikipedia says...:rolleyes:


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    #730
    Ivan Offlcockitch
    Closed Accounts Posts: 28 ✭Ivan Offlcockitch


    Will ye STOP going on about the amino acid Q!!!
    It was a SHORT question.
    It was part of a MULTIPLE CHOICE question where if you have the other 5 right you will be fine.
    It is worth 4 MARKS.

    Can everyone just accept the answer being looked for is 20 but 21 or 22 will most likely get the marks.
    Now can everyone just GET OVER IT and move on!!!


    ........Enjoy the summer everyone.smile.gif


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    #731
    B_Fanatic
    Registered Users Posts: 334 ✭✭B_Fanatic


    Now that we're apparently over that hump, here's something else which could be controversial:

    "9. (a) (i) How are the two strands of a DNA molecule joined together?"

    I said DNA Polymerase. I'm pretty sure what they were looking for was to name the bond, but technically that is how they become joined together, yes?


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    #732
    J_E
    Closed Accounts Posts: 5,734 ✭✭✭J_E


    I said a double helix shape with complimentary pairs joining each other. I don't know really.


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    #733
    Ivan Offlcockitch
    Closed Accounts Posts: 28 ✭Ivan Offlcockitch


    hydrogen bond was what i said i think


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    #734
    LittleMissLost
    Registered Users Posts: 479 ✭✭LittleMissLost


    Ivan Offlcockitch wrote: »
    hydrogen bond was what i said i think

    I said weak hydrogen bonds..
    That's also what it says in my notes. If they don't give me the marks because I put "weak" in I'll flip :eek::mad:


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    #735
    leaving cert finished 2k11
    Closed Accounts Posts: 7 ✭leaving cert finished 2k11


    for the amino acid question the answers 20 21 22 will be acceptable and maybe ppl will be rewarded for stating the number of amino acids that are necessary to form a protein...what was any of yer answers to question 4 on the graph of human body temperature when it asked wat is the maximum temperature range under normal conditions..i said 1.6 as i took lowest temperatue from highest temperature??


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    #736
    GSI
    Registered Users Posts: 202 ✭✭GSI


    I can't believe this thread is still alive. Jesus christ, I'd forgotten about biology an hour after the exam:/


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    #737
    leaving cert finished 2k11
    Closed Accounts Posts: 7 ✭leaving cert finished 2k11


    ya i said hydrogen bonding between base pairs but id say dan ligase and dna polymerase will also be acceptable :D


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