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    What are Xerophytes and what do we need to know about them if we need to?
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    (Original post by SyedaK)
    Can someone clearly explain to me the process of synthesising proteins - with the golgi apparatus and rER
    1. protein release from ribosome /eq ;
    2. enter the rER {lumen / eq} ;
    3. becomes packaged into (rER) vesicles ;
    4. (vesicles / proteins) move to Golgi (apparatus) / {vesicles fuse with / protein enters} Golgi ;
    5. protein {modified / carbohydrate added / named carbohydrate added} / eq ;
    6. then become packaged into (secretory) vesicles / eq ;
    7. glycoprotein becomes part of (vesicle) membrane ;
    8. vesicles {move towards / fuse with} the cell (surface) membrane ;

    simple to understand from 2009 jun
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    oh and, do we need to know about melanin?
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    (Original post by ramanan)
    i don't think so don't remember seeing them in past paper :rolleyes:
    ah right thanks!
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    guysin these experiments the container is sealed?
    anti-microbial
    mineral
    totipotency
    ??

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    (Original post by Kurraiyo)
    Hey in a double-blind trial, neither the patient nor the doctor knows who is on the actual drug and who is on the placebo right? Or does the doctor know?
    If they both don't know, how are they supposed to compare the two groups?
    Neither patient nor doctor know. The 2 groups are compared on how much they improve. If the actual drug group improves more than the placebo group then we know that the drug is effective.

    The doctor won't know but some one else would know who belongs to each group and they can compare the results
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    (Original post by Rubyturner94)
    guysin these experiments the container is sealed?
    anti-microbial
    mineral
    totipotency
    ??

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    yup to prevent contamination and growth of harmfull bacteria
    and make the experiment less valid,

    for anti mic-test also to aviod competition between bacteria.
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    (Original post by ramanan)
    yup to prevent contamination and growth of harmfull bacteria
    and make the experiment less valid,

    for anti mic-test also to aviod competition between bacteria.
    thanks

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    (Original post by JaayBiology)
    What are Xerophytes and what do we need to know about them if we need to?
    they a plant specialized to live in harsh condition in desert like cactus,
    i don't think we need them
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    (Original post by ramanan)
    yup to prevent contamination and growth of harmful bacteria
    and make the experiment less valid,

    for anti mic-test also to avoid competition between bacteria.
    Also so that the bacteria can respire aerobicaly (which prevents growth of pathogenic bacteria)
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    allot of you have said that there was allot of hsw questions in the jan 2013, i actually thought there was justt one 2 marker :/ maybe my interpretation of what hsw questions are is wrong :/
    so what were the hsw question in the jan 2013?

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    (Original post by Problematique)
    oh and, do we need to know about melanin?
    its a human pigment for determination of our skin colour, it might show up in genetic question though, any further details might be provided in the question itself ( I hope)
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    (Original post by ramanan)
    1. protein release from ribosome /eq ;
    2. enter the rER {lumen / eq} ;
    3. becomes packaged into (rER) vesicles ;
    4. (vesicles / proteins) move to Golgi (apparatus) / {vesicles fuse with / protein enters} Golgi ;
    5. protein {modified / carbohydrate added / named carbohydrate added} / eq ;
    6. then become packaged into (secretory) vesicles / eq ;
    7. glycoprotein becomes part of (vesicle) membrane ;
    8. vesicles {move towards / fuse with} the cell (surface) membrane ;

    simple to understand from 2009 jun
    thank you
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    (Original post by ramanan)
    its a human pigment for determination of our skin colour, it might show up in genetic question though, any further details might be provided in the question itself ( I hope)
    pleeease examples of pluripotent totipotent and multipotent cells
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    (Original post by Rubyturner94)
    i hated it too many hsw questions.

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    Hopefully it isn't like that tomorrow!
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    (Original post by justanotherindigo)
    -Proteins are synthesised in the ribosomes
    -Stored in the rER
    -The protein is then folded into a 3D shape within the lumen of the rER
    -Vesicles pinch off the rER, fusing with the golgi body forming flattened cisternae
    -Golgi body modifies the protein (i.e. glycoproteins, trimming of carbohydrate)
    -Water is removed to concentrate
    -Vesicles pinch off the golgi body
    -Substance leaves cell via exocytosis
    Thank you
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    (Original post by Daniel Atieh)
    pleeease examples of pluripotent totipotent and multipotent cells
    Totipotent stem cells: any cell before blastocyst stage.
    Pluripotent: Anything apart from extraembryonic cells (the placenta)
    Multipotent: adult stem cells (in bone marrow)
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    (Original post by SyedaK)
    Thank you
    It's okay! Best of luck for tomorrow
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    i may seem a bit ignorant, but what is a hsw question?
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    Quick question - what is the difference in structure between the primary cell wall and the secondary cell wall?
 
 
 
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