Sulfhydryl groups have the ability to react with the alkylating reagent n-ethylmaleimide (nem) in chemical modification experiments. when nem is added to a purified solution of creatine kinase, cys 278 is alkylated, but no other cys residues in the protein are modified. what can you infer about the cys 278 residue based on this observation?

You need to divided twenty four by a dozen them by the temperature it is getting cook by

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.

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).