Doji
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#1
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#1
Ok i remember one with excalibur ages ago for unit 2 and stuff last year lol, lets do one for U4 core, as were all doing diff options. OK i'll go first.

Why does the eye take a second or two, to get used to bright light after they enter a room which was full of darkness?
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Nirvash
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#2
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Because the rhodopsin has to be re-synthesized after they were bleached in bright light.

And no, I wasn't hitting on her :rolleyes:
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Doji
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Haha you joker nirvash, its your turn to ask a Q, thats how it works :p:
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Nirvash
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State how ammonia is produced in the human body.
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Doji
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#5
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Deamination occurs because the fatso eats too much protein, NH3 is removed by the ornathine cycle.

How is urea produced?
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Nirvash
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#6
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:ditto: ?
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Doji
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#7
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Nooo ... what you mean ditto? Its not the same as NH3 production, theres a wee step after no?
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Nirvash
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Something to do with CO2? Lol, I'm not very good at this am I :p:
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Doji
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#9
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Maybe if you would stop gawking at kashmir's image, you might be :p:

Yeah your right, CO2 reacts with NH3 to produce urea.

Describe how the effects of exposure of PFR to darkness could be reversed.
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M.A.H
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Whats PFR?
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Nirvash
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Hey - I bet you're the one who's "gawking" here.

PFR as in Far Red light and the phytochrome stuff?
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Doji
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(Original post by M.A.H)
Whats PFR?
Stop stalking me please
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M.A.H
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(Original post by Doji)
Maybe if you would stop gawking at kashmir's image, you might be :p:

Yeah your right, CO2 reacts with NH3 to produce urea.

Describe how the effects of exposure of PFR to darkness could be reversed.
Hmm PFr converts to Pr in dark so expose it to really bright light with high wavelength(?)

Some people produce pee that has proteins, suggest an explanation
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Doji
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(Original post by M.A.H)
Hmm PFr converts to Pr in dark so expose it to really bright light with high wavelength(?)

Some people produce pee that has proteins, suggest an explanation
The kidneys busted
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cclose
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(Original post by M.A.H)
Hmm PFr converts to Pr in dark so expose it to really bright light with high wavelength(?)

Some people produce pee that has proteins, suggest an explanation
Could it have anything to do with lack of deamnification in liver failure? or problem in ultrafiltration? argh im lost
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(Original post by cclose)
Could it have anything to do with lack of deamnification in liver failure? or problem in ultrafiltration? argh im lost
The answer says:
Higher blood pressure so proteins get filtered out of the blood.

Or

Wall of the capillary/basement membrane is damaged so that larger molecules can filter out.

Whats the role of mitochondrial membranes in the production of ATP?
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Doji
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(Original post by M.A.H)
The answer says:
Higher blood pressure so proteins get filtered out of the blood.

Or

Wall of the capillary/basement membrane is damaged so that larger molecules can filter out.

Whats the role of mitochondrial membranes in the production of ATP?
Umm i think cristae is a membrane and its were the electron carriers are, and the inter membrenal space is where the H+ protons are pumped into?

Whats the advantage of having a relay neurone i a reflex arc?
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Vikid
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Whats the advantage of having a relay neurone i a reflex arc?[/QUOTE]

Is it that quick involuntary responses can be made to potentially dangerous stimuli without any need for concious thought
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(Original post by Doji)
Umm i think cristae is a membrane and its were the electron carriers are, and the inter membrenal space is where the H+ protons are pumped into?

Whats the advantage of having a relay neurone i a reflex arc?
Id say increases the reaction time so better suiting survival chances of the organism.

Why would glucose in the urine result in the production of a larger volume of urine compared to when glucose isnt present?
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(Original post by cclose)
Id say increases the reaction time so better suiting survival chances of the organism.

Why would glucose in the urine result in the production of a larger volume of urine compared to when glucose isnt present?
Umm because less glucose in the blood means, the blood has a lower solute potential, and so the collecting ducts have a higher solute potential, and water will enter the collecting ducts rather than be absorbed into the blood, hence more urine?

Hard question lol, please tell us the answer.
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