ATP is organized in ATPase enzyme pockets by multiple interactions including:

Walker A and B amino acids coordinate an essential Mg2 .
The coordinated Mg2 polarizes the gamma-phosphate.
Water binds the gamma-phosphate.
The Walker B motif organizes the alpha-phosphate. All of the above are correct.

the dissolution of polymer can be thermodynamically described in 2 steps.

the answer is true. hope it .

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.