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Re: [Phys-l] More Stupidity in state exams




On 2011, Aug 09, , at 15:52, chuck britton wrote:

hmmm, and I thought that the 'Energy' was released when the fragments
RE-bonded with oxygen or whatever.


I read the Dr. as understanding the physics. (chem.)

... (in the context of the whole reaction
going on), ...

breaking bonds absorb E, or "emit" negative E? The complete cycle results in + E.

bc


At 10:26 PM +0100 8/9/11, Dr. Keith S. Taber wrote:


The terminology 'energy-rich phosphate bonds'is not helpful in this
regard, but perhaps 'easily-disrupted-by-energy phosphate bonds' does
not have quite the same ring? Of course, energy does tend to be given
out when these bonds break (in the context of the whole reaction
going on), and I think some biologists feel it is therefore being
pedantic to point out that like any bond energy is required to break
them.