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    (Original post by Malawasheree)
    Lost my notes for Plant Responses

    Could anyone go over the role of auxins in phototropism and how they promote the loosening of the cell wall?
    Ok fam, lemme help you out yeh

    So basically auxin travels by active transport/diffusion to the cells in the zone of elongation. Auxin makes the cell walls stretchy and promotes the active transport of protons into the cell wall. This lowers the pH. The pH is now at an optimum for the wall-loosening enzymes (expansins) to work.

    When light shines on one side of the shoot, auxins travel to the shaded side. This makes the shaded side elongate, and therefore pushes the shoot towards the light source fam

    Dat cool now?

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    Any more predictions lads? Do we reckon lots on biotechnology will come up?
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    (Original post by Shanahey)
    Why is batch culture more suitable for producing secondary metabolites and not primary?

    Thanks
    Secondary metabolites are usually produced in the stationary phase of growth culture, as there are not normally produced as part of the normal growth of the cell (primary metabolites). Some secondary metabolites, such as penicillin, are produced as a result of competition
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    (Original post by Shanahey)
    Why is batch culture more suitable for producing secondary metabolites and not primary?

    Thanks
    Im not sure about this one fam

    But maybe it's something to do with nutrients declining over time?

    Das a good question bro. I wanna know the answer too

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    (Original post by wanna get laid)
    Ok fam, lemme help you out yeh

    So basically auxin travels by active transport/diffusion to the cells in the zone of elongation. Auxin makes the cell walls stretchy and promotes the active transport of protons into the cell wall. This lowers the pH. The pH is now at an optimum for the wall-loosening enzymes (expansins) to work.

    When light shines on one side of the shoot, auxins travel to the shaded side. This makes the shaded side elongate, and therefore pushes the shoot towards the light source fam

    Dat cool now?

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    Hmmm, I think I learnt that it was H+ ions that were actively transported and lower the pH. Or am I confusing that to F214 stuff?
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    (Original post by Malawasheree)
    Secondary metabolites are usually produced in the stationary phase of growth culture, as there are not normally produced as part of the normal growth of the cell (primary metabolites). Some secondary metabolites, such as penicillin, are produced as a result of competition
    Thank you


    (Original post by wanna get laid)
    Im not sure about this one fam

    But maybe it's something to do with nutrients declining over time?

    Das a good question bro. I wanna know the answer too

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    Yh safe fam
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    (Original post by Nadwuar)
    Safe blud, mans just trynna get an A outchea u get me fam?
    Yeh fam i get u

    Mans trying to bag himself an a* brrrap

    Need 127/150 for a* u get me

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    U are one cheeky scrub m8
    (Original post by wanna get laid)
    Im not sure about this one fam

    But maybe it's something to do with nutrients declining over time?

    Das a good question bro. I wanna know the answer too

    Posted from TSR Mobile
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    (Original post by Malawasheree)
    Hmmm, I think I learnt that it was H+ ions that were actively transported and lower the pH. Or am I confusing that to F214 stuff?
    Do you do chemistry?

    Hydrogen ions (H+) are the same things as protons, because hydrogen is just made up of one electron and one proton. So one electron lost from a hydrogen atom means we're just left with a proton

    You can use H+ if youre more comfortable with it. Same thing

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    (Original post by Syystole)
    U are one cheeky scrub m8
    What makes you say that? :hmmm:

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    (Original post by ishackm)
    i dont want to fail came this far
    Revise what you think you struggle on and the rest should be fine (just don't overdo it), the grade boundaries will be low because of the 'effing timetable.
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    can anyone define classical conditioning ??
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    (Original post by TheLegalDealer)
    can anyone define classical conditioning ??
    Alright fam, lemme clear the air for ya on this one

    Basically, the animal learns to associate a pair of events, so that it produces a response to the first stimulus in anticipation for the second

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    (Original post by Ned Stark)
    Revise what you think you struggle on and the rest should be fine (just don't overdo it), the grade boundaries will be low because of the 'effing timetable.
    thanks mate
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    (Original post by wanna get laid)
    Alright fam, lemme clear the air for ya on this one

    Basically, the animal learns to associate a pair of events, so that it produces a response to the first stimulus in anticipation for the second

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    safe famalam
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    Has anyone got the Exam Cafe CD answers? Can't find them anywhere
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    (Original post by TheLegalDealer)
    safe famalam
    So like in the book

    When you ring a bell (stimulus) the dog salivates cos it knows that it will get food after the bell is rang

    So it is already ready to eat the food before it even sees the food. It's already salivating. It has anticipated for the food
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    Predictions guys?
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    any specific parts of the brain we have to know indepth
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    (Original post by ooxbridge)
    Predictions guys?
    1. Sex-linked or Epistasis cross with a Chi-Squared calculation

    2. Nitrogen Cycle

    3. Primate behaviour (Insight learning experiment?)

    4. Timber Management

    5. Succession

    6. Natural and Artificial Selection

    My tutor sent me these a possible questions for this year, though I wouldn't take jis word as gospel.
    Hope this helps.
 
 
 
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