Effect of heat on respiration in organisms

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Stef74
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Effect of heat on respiration in organisms

Post by Stef74 » Sat Oct 01, 2005 6:04 pm

Can you please explain the effect of heat on respiration in organisms. I am trying to write a report for an experiment I havent done involving a respirometer and maggots, and I am struggling to find relevant information

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MrMistery
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Post by MrMistery » Sat Oct 01, 2005 7:23 pm

Cellular respiration is very much affected in all organisms. It is easiest to measure in plants. basically what you need to know is that there is a minimum, an optimal, and a maximum. At most plants the minimum is 0 celsius, optimal 30-35 celsius. Pine trees can breathe at -25 celsius. Some thermal algae at +65 celsius. The optimal temperature of 35 celsius goes for most organisms.. With a lot of exceptions..
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter

Stef74
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Post by Stef74 » Sun Oct 02, 2005 10:29 am

am I correct to think respiration increases as temp does up until the maximum temperature.

Fried Zygote Sandwich
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Post by Fried Zygote Sandwich » Mon Oct 03, 2005 2:10 am

http://users.rcn.com/jkimball.ma.ultran ... H_temp.gif


The following link shows a nice little graph of how pH and temperature affect enzymatic activity.

baikuza
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Post by baikuza » Mon Oct 03, 2005 12:06 pm

hi u there?
hm...
:idea:
the effect of heat of respiration to organism. right?
i think the heat from the respiration, maybe for us, human, it can keep our body warm. any one know that the efficiency(am i write a correct word) of respiration (aerob) is just 40%. so.. + 60% of energy that we get become calor.

then i am thinking the same answer as Mr. Mistery about enzyme. keep on fisiological homeostasis(i hope i write the correct words-homeostasis/homeotasis :idea: )

okay.. can i write more?
____________
uh...

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victor
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Post by victor » Tue Oct 04, 2005 11:44 am

I can say like this (maybe it's a little bit go to the animal cells):
in animal cells, glycolysis is occured in the cytoplasm where NAD+ is reduced with 2e- and forms NADH+H. then, this NADH+H carries the H+ ions and e- to the cristae mitochondrion when ETS occured. During the carrying, NADH+H lose some of it's kinetic energy and that's why the efficiency are lowered.
Anyway, for some info (I'm sure eeryone have known 'bout this)..if the efficiency of the respiration is 100%, then our body will have exploded into pieces because fusion reaction between H+ ions and O2 as the last e- acceptor....
regards,
Victor
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A: They have all the solutions.

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MrMistery
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Post by MrMistery » Tue Oct 04, 2005 7:11 pm

Are we talking about the influence of heat on respiration or the other way around?
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