Bioenergetics: Is the energy changes accompanying biochemical reactions

an endergonic process cannot exist independently but must be a component of a coupled exergonic-endergonic system where the overall net change is exergonic

Select the incorrect statement about ATP

b) When ATP release ℗, then regenerate ATP by binding ADP with any phosphate even from low energy phosphate

The three minor source of high energy ATP are oxidative phosphorylation,glycolysis and TCA.

d) Phosphagen act as storage forms of high energy phosphate ,as creatine phosphate and glucose-1-phosphate .

hydrolytic splitting of PPi , catalyzed by inorganic pyrophosphatase

ATP can also be hydrolyzed directly to AMP, with the release of PPi

AMP able to act as a metabolic (allosteric) signal to increase the rate of catabolic reactions

Glucose to glucose 6 phosphate reaction is endergonic reaction

Some problems related to energy:.

Energy may be transferred into another form of energy, or
may be transformed from one part of the system to another.

ΔG may be larger or smaller than ΔG0 depending on the concentrations of the various reactants

The terms exergonic and endergonic, rather than the normal chemical terms “
exothermic” and “endothermic,” are used to indicate that a process is
accompanied by gain or loss, respectively

crossroads is/are:

One possible mechanism of coupling could be envisaged if a common
obligatory intermediate (I) took part in both reactions, that is,

All values taken from Jencks (1976), except that for PPi which is from....

There are ............. high energy P-bonds in an AMP molucle is

There are ............. high energy P-bonds in an ATP molucle is

The system is at equilibrium and not net charge if........