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As biology unit 1 21/5/2014 panic thread watch

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    i dnt get d whole STR concept.. thy r just repeats?
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    (Original post by Catb97)
    There is a pattern in the core practical questions - well as in no two the same have come up two years in a row - i reckon either enzymes or beetroot should come up this time, and definitely not vit c
    Yeah I'd figured that out as well let's hope they don't change it around!
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    (Original post by N.Choi)
    Transcription (in nucleus):
    • Double helix unwinds and hydrogen bonds break between bases
    • One strand is used as a template to make mRNA.
    • Free RNA line up along this template strand called the antisense by complementary base pairing.
    • RNA polymerase binds the RNA bases together
    • 3 adjacent mRNA bases forms a codon


    Translation (in cytoplasm)
    • mRNA moves out of nuclear pores and onto ribosomes
    • a tRNA moves into the mRNA. A tRNA consists of three bases called an anticodon and it has an amino acid too
    • The anticodon binds with codon by complementary base pairing
    • When there are two tRNA lining up, the two amino acids join together by peptide bonds


    Thats all
    Thank you so so much!!!
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    (Original post by crazzysashgirl)
    i dnt get d whole STR concept.. thy r just repeats?
    what exactly do you mean by STR?maybe we can sort something out
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    when does thymine turn into uruanine?? Transcription/translation???
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    (Original post by gabriella2193)
    when does thymine turn into uruanine?? Transcription/translation???
    thymine dsnt turn into nyth,, and tz uracil..
    mRNA only contain Adeninde, guannine, cytosin n uracil.. which z compatible to Thymine,..

    and it is in transcription mRNA is formed.. therfore the answer for ur question wil be transcription,,

    in translation, polypeptide is formed.. from d codon on mRNA by tRNA.
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    guys , can someone pleeeeaaassee explain to me the idea of mass flow ? i dont understand what it is and when to use it
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    (Original post by gabriella2193)
    when does thymine turn into uruanine?? Transcription/translation???
    during transcription DNA unwinds and strands separate ,and nucleotides line up against complementary bases and RNA polymerase joins nucleotides by condensation reaction (forming phosphodiester bond ).mRNA strands separate from DNA molecule and migrate to ribosomes for translation.So to answer your question thymine=uracil replacement is at transcription
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    (Original post by Alnassenigzig)
    during transcription DNA unwinds and strands separate ,and nucleotides line up against complementary bases and RNA polymerase joins nucleotides by condensation reaction (forming phosphodiester bond ).mRNA strands separate from DNA molecule and migrate to ribosomes for translation.So to answer your question thymine=uranine replacement is at transcription

    u mean URACIL not URANINE
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    (Original post by Alnassenigzig)
    during transcription DNA unwinds and strands separate ,and nucleotides line up against complementary bases and RNA polymerase joins nucleotides by condensation reaction (forming phosphodiester bond ).mRNA strands separate from DNA molecule and migrate to ribosomes for translation.So to answer your question thymine=uranine replacement is at transcription
    uranine???? :confused:
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    (Original post by Paras Agarwal)
    u mean URACIL not URANINE
    pfft what are you talking about pfft...you high man?
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    I edited the post ,thanks for the heads up
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    (Original post by Alnassenigzig)
    pfft what are you talking about pfft...you high man?
    uranine is a fluroscent dye which is used for tracing water and we don't learn abt it nd wt u r meaning here is URACIL ; the nitrogenous base!!!
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    Guys, do we need to learn the structures of adenine, guanine, etc?

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    (Original post by Alnassenigzig)
    pfft what are you talking about pfft...you high man?
    lmao go home and revise properly

    (Original post by crazzysashgirl)
    uranine???? :confused:
    exactly my reaction :P confused people on this thread
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    (Original post by crazzysashgirl)
    uranine is a fluorescent dye which is used for tracing water and we didn't learn about it and what you are meaning here is URACIL ; the nitrogenous base!!!
    I am aware of the mix up ,I was being sarcastic...I edited my original post to Uracil...geez calm down guys how do you expect to learn with such aggression
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    (Original post by Paras Agarwal)
    lmao go home and revise properly


    exactly my reaction :P confused people on this thread
    I sense a high level of intellectuality here....you should learn to recognize sarcasm Mr.Know-it-all
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    What type of questions are people expecting for last question (10 marks) on the paper?


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    (Original post by Alnassenigzig)
    I sense a high level of intellectuality here....you should learn to recognize sarcasm Mr.Know-it-all
    lol you and i both know it wasn't sarcasm thanks for the complement!
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    (Original post by Paras Agarwal)
    lol you and i both know it wasn't sarcasm thanks for the complement!
    I put two 'pffft's in that response anyone with half a brain would notice im being sarcastic
 
 
 
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