How does large change in temperature or ph affect proteins?

(a) they eliminate all of their essential amino acids
(b) they lose their acid sequence
(c) they come apart or lose their shape
(d) they change their amino acids into fatty acids

Well to my expert knowledge and my exquisite calculations i think the the negative ion # 412 is the key to sucess

You would be correct, boiling water does disinfect contamination.    the property of disinfecting means to kill  germs, bacteria and other pathogens or contamination  that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate.  the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.