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    I tried my best to explain it earlier in this thread, basically
    In the kidneys - blood from the renal artery passes into the Glomerulus - a bundle of blood capillaries, and urea, water, glucose and salts are filtered out by high pressure (aka ultrafiltration), these pass into the Bowman's Capsule, protein isn't squeezed out because the molecules are too large. This mixture is known as the glomerular filtrate
    The glomerular filtrate moves to the section of the nephron known as the proximal convoluted tubule, and all the glucose is reabsorbed by active transport because we need it for respiration. Then in the loop of Henle and the Distal Convoluted tubule useful salts are reabsorbed, and in the collecting duct some water is reabsorbed. If there's a low level of water in the blood the brain detects this and a hormone ADH (anti-diuretic hormone) is released by the pituitary gland, which travels to it in the blood, it acts on the wall making it more permeable to water. Left over is a solution of urine containing Urea, some salts, and some water. Which passes through the ureter to the bladder and is then released via the urethra


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    oh !!! thanx
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    i dont understand one thing wher does the energy come from in active transport
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    Respiration - energy in the form of ATP is produced


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    thanx
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    No problem, now anyone know any easy way of remembering stuff about fermenters and beer/yoghurt production?


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    Anyone did human biology? How was your exam?
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    btw im also sittin igcse edexcel biology. Any general tips?
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    (Original post by TheCe)
    btw im also sittin igcse edexcel biology. Any general tips?
    Revise and plz don't brag about how easy it wasn't after Tuesday


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    (Original post by themightysandu)
    Revise and plz don't brag about how easy it wasn't after Tuesday


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    haha

    i think i'm quite prepared just need to have a look at stuff here and there yano

    how's your revision going?
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    (Original post by TheCe)
    haha

    i think i'm quite prepared just need to have a look at stuff here and there yano

    how's your revision going?
    Well, got 4 other exams to revise for next week so pretty depressing


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    making yoghurt:
    milk is pasteurized for 15_30 min on 85-95°c temp
    homogenized to disperse the fat globules
    then cooled to 40 to 45 and then lactic acid bacteria is mixed
    mixture is incubated fr several hours so that bacteria digests the milk proteins and ferment lactose to lactic acid
    yoghurt is stirred and cooled to 5°c
    fruits flavourings and colorants may be added before packaging
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    (Original post by themightysandu)
    Well, got 4 other exams to revise for next week so pretty depressing


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    oh
    what grade are you predicting?
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    (Original post by TheCe)
    oh
    what grade are you predicting?
    Straight A's and A*'s but the more I revise the more I realise I don't know,


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    (Original post by themightysandu;[url="tel:64776403")
    64776403[/url]]Straight A's and A*'s but the more I revise the more I realise I don't know,


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    yup happens to me too
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    (Original post by themightysandu)
    Straight A's and A*'s but the more I revise the more I realise I don't know,


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    me too mate ha ha

    what were your grades in biology mocks?
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    (Original post by TheCe)
    me too mate ha ha

    what were your grades in biology mocks?
    A*
    Wbu?

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    (Original post by themightysandu)
    A*
    Wbu?

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    A*
    But man feels he gotta revise his arse off if he wants that A* in the real ting

    Up for a competition like doing past papers and comparing marks hehehe
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    (Original post by TheCe)
    A*
    But man feels he gotta revise his arse off if he wants that A* in the real ting

    Up for a competition like doing past papers and comparing marks hehehe
    Ikr, done all of them, just going over weak topics


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    (Original post by themightysandu)
    Ikr, done all of them, just going over weak topics


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    Sounds good

    Which ones if I may ask?
 
 
 
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