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lab report. need help'' PLEASE! it kills me.

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lab report. need help'' PLEASE! it kills me.

Postby BEBUBEBU » Sun Apr 01, 2007 3:34 pm

Test tube tissue tested Any reaction occurred Rate of formation of
bubbles
A Fresh liver + 3
B Potato + 1
C Meat + 2
D Apple + 1
E Boiled liver - 0
F Iced liver + 3

*(+ = yes,- = no)
--------------------------------------------------------------------
Could somebody kindly describe and explain the trend of the results?
Give as detailed answers as you could.
PLease also write down any possible errors in performing the experiment.


**Besides... 2 more questions....

1) Predict and explain whether there will be any changes in the results if
the iced liver is warmed to 37*C.

2) Explain the result for boiled liver. Why did you obtain such a result
even when the boiled liver was cooled to room temperature?


LOT OF THX!
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Postby mith » Sun Apr 01, 2007 10:19 pm

You can't really plot a trend unless you decide what your axis are, figure out how to categorize the relationship between liver and apple(good luck, I have no idea how).

There's no possible errors? You didn't tell me any.

1. Predict? How do I do that? Oh right, trend...
2. Obviously cooling a liver isn't the same as unboiling it.
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Postby Noumenalist » Wed Apr 04, 2007 12:42 am

For the questions,

I believe this has something to do with the proteins denaturing? There shouldn't be a reaction..

I can't really say anymore because you didn't specify what you're doing, precisely..
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Postby mith » Wed Apr 04, 2007 1:35 am

Yeah, there's a reaction to cause the bubbles.
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Postby Noumenalist » Wed Apr 04, 2007 3:06 am

The proteins denatured in the *boiled liver.

Even if you change the temperature of the boiled liver, no reaction will take place..
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Postby alcyon » Sun Apr 15, 2007 8:50 am

and i'm still wondering what exactly is this person doing??? Is it supposed to be testing for active protein? or is it the tissue's reaction with some kind of oxido-reductase?......mysterious...
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Postby alcyon » Sun Apr 15, 2007 8:58 am

Emm...it could be testing the reaction of Catalase with differen tissues that used to be done in highschool...but then fresh liver contain lots of Catalase anyway so what's the point...
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