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Activation energy

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Activation energy

Postby thank.darwin » Thu Feb 10, 2005 7:59 pm

I know what activation energy is and what it does but my question is - can activation energy be anything? (I know it can't be anything but what are the different kinds of activation energy?)
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Postby mith » Thu Feb 10, 2005 8:17 pm

That's chemisty isn't it? I think it has to be a form of molecular kinetic energy.
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Postby thank.darwin » Thu Feb 10, 2005 8:20 pm

Part of it is physics... But I'm in the middle of a unit about it in a biology class :D
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Postby RobJim » Fri Feb 11, 2005 4:08 am

I don't really understand your question. Can you clarify?
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Postby biostudent84 » Fri Feb 11, 2005 6:37 am

In any chemical reaction, activation energy is needed.
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Postby thank.darwin » Fri Feb 11, 2005 11:19 am

biostudent84 wrote:In any chemical reaction, activation energy is needed.


I know that - but what can that activation energy be?
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Postby Poison » Fri Feb 11, 2005 4:20 pm

generally ATP is used.
But here is the list of compounds that can be used to get the activation energy of a biochemical reaction:
Phosphoenol pyruvate (Highest energy)
carbomoil phosphate
1,3 diphosphoglycerate
Creatin Phosphate
ATP
Glucose-1 Phosphate
Fructose-6 phosphate
Glucose-6 phosphate
Glycerole-3 phosphate(lowest energy)
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Postby mith » Fri Feb 11, 2005 8:15 pm

Can you explain how these molecules work? I think they donate charged ions but not sure.
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Postby RobJim » Sat Feb 12, 2005 5:26 am

I know that - but what can that activation energy be?


Are you asking:

1) What form can the energy be in immediately before it's used to overcome the activation energy?

2) What are the possible values in Joules for the activation energy?
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Postby Poison » Sat Feb 12, 2005 4:53 pm

mithrilhack wrote:Can you explain how these molecules work? I think they donate charged ions but not sure.

They have high energy bonds. especially phosphate bonds. when these bonds break down, energy comes out. and can be used for activation or other purposes.
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Postby thank.darwin » Sun Feb 13, 2005 2:52 am

Thank-you for your help :D
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Postby Poison » Sun Feb 13, 2005 3:08 pm

No problem. :)
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